20488860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:153

約数の個数: 216

約数和(自身を含む): 76186656

約数和(自身を除く): 55697796

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 49, 60, 63, 69, 70, 84, 90, 92, 98, 101, 105, 115, 126, 138, 140, 147, 161, 180, 196, 202, 207, 210, 230, 245, 252, 276, 294, 303, 315, 322, 345, 404, 414, 420, 441, 460, 483, 490, 505, 588, 606, 630, 644, 690, 707, 735, 805, 828, 882, 909, 966, 980, 1010, 1035, 1127, 1212, 1260, 1380, 1414, 1449, 1470, 1515, 1610, 1764, 1818, 1932, 2020, 2070, 2121, 2205, 2254, 2323, 2415, 2828, 2898, 2940, 3030, 3220, 3381, 3535, 3636, 4140, 4242, 4410, 4508, 4545, 4646, 4830, 4949, 5635, 5796, 6060, 6363, 6762, 6969, 7070, 7245, 8484, 8820, 9090, 9292, 9660, 9898, 10143, 10605, 11270, 11615, 12726, 13524, 13938, 14140, 14490, 14847, 16261, 16905, 18180, 19796, 20286, 20907, 21210, 22540, 23230, 24745, 25452, 27876, 28980, 29694, 31815, 32522, 33810, 34845, 40572, 41814, 42420, 44541, 46460, 48783, 49490, 50715, 59388, 63630, 65044, 67620, 69690, 74235, 81305, 83628, 89082, 97566, 98980, 101430, 104535, 113827, 127260, 139380, 146349, 148470, 162610, 178164, 195132, 202860, 209070, 222705, 227654, 243915, 292698, 296940, 325220, 341481, 418140, 445410, 455308, 487830, 569135, 585396, 682962, 731745, 890820, 975660, 1024443, 1138270, 1365924, 1463490, 1707405, 2048886, 2276540, 2926980, 3414810, 4097772, 5122215, 6829620, 10244430, 20488860]

約数ペア:

[(1, 20488860), (2, 10244430), (3, 6829620), (4, 5122215), (5, 4097772), (6, 3414810), (7, 2926980), (9, 2276540), (10, 2048886), (12, 1707405), (14, 1463490), (15, 1365924), (18, 1138270), (20, 1024443), (21, 975660), (23, 890820), (28, 731745), (30, 682962), (35, 585396), (36, 569135), (42, 487830), (45, 455308), (46, 445410), (49, 418140), (60, 341481), (63, 325220), (69, 296940), (70, 292698), (84, 243915), (90, 227654), (92, 222705), (98, 209070), (101, 202860), (105, 195132), (115, 178164), (126, 162610), (138, 148470), (140, 146349), (147, 139380), (161, 127260), (180, 113827), (196, 104535), (202, 101430), (207, 98980), (210, 97566), (230, 89082), (245, 83628), (252, 81305), (276, 74235), (294, 69690), (303, 67620), (315, 65044), (322, 63630), (345, 59388), (404, 50715), (414, 49490), (420, 48783), (441, 46460), (460, 44541), (483, 42420), (490, 41814), (505, 40572), (588, 34845), (606, 33810), (630, 32522), (644, 31815), (690, 29694), (707, 28980), (735, 27876), (805, 25452), (828, 24745), (882, 23230), (909, 22540), (966, 21210), (980, 20907), (1010, 20286), (1035, 19796), (1127, 18180), (1212, 16905), (1260, 16261), (1380, 14847), (1414, 14490), (1449, 14140), (1470, 13938), (1515, 13524), (1610, 12726), (1764, 11615), (1818, 11270), (1932, 10605), (2020, 10143), (2070, 9898), (2121, 9660), (2205, 9292), (2254, 9090), (2323, 8820), (2415, 8484), (2828, 7245), (2898, 7070), (2940, 6969), (3030, 6762), (3220, 6363), (3381, 6060), (3535, 5796), (3636, 5635), (4140, 4949), (4242, 4830), (4410, 4646), (4508, 4545)]