21628620

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 180

約数和(自身を含む): 74400480

約数和(自身を除く): 52771860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 79, 81, 90, 108, 117, 130, 135, 156, 158, 162, 169, 180, 195, 234, 237, 260, 270, 316, 324, 338, 351, 390, 395, 405, 468, 474, 507, 540, 585, 676, 702, 711, 780, 790, 810, 845, 948, 1014, 1027, 1053, 1170, 1185, 1404, 1422, 1521, 1580, 1620, 1690, 1755, 2028, 2054, 2106, 2133, 2340, 2370, 2535, 2844, 3042, 3081, 3380, 3510, 3555, 4108, 4212, 4266, 4563, 4740, 5070, 5135, 5265, 6084, 6162, 6399, 7020, 7110, 7605, 8532, 9126, 9243, 10140, 10270, 10530, 10665, 12324, 12798, 13351, 13689, 14220, 15210, 15405, 18252, 18486, 20540, 21060, 21330, 22815, 25596, 26702, 27378, 27729, 30420, 30810, 31995, 36972, 40053, 42660, 45630, 46215, 53404, 54756, 55458, 61620, 63990, 66755, 68445, 80106, 83187, 91260, 92430, 110916, 120159, 127980, 133510, 136890, 138645, 160212, 166374, 184860, 200265, 240318, 267020, 273780, 277290, 332748, 360477, 400530, 415935, 480636, 554580, 600795, 720954, 801060, 831870, 1081431, 1201590, 1441908, 1663740, 1802385, 2162862, 2403180, 3604770, 4325724, 5407155, 7209540, 10814310, 21628620]

約数ペア:

[(1, 21628620), (2, 10814310), (3, 7209540), (4, 5407155), (5, 4325724), (6, 3604770), (9, 2403180), (10, 2162862), (12, 1802385), (13, 1663740), (15, 1441908), (18, 1201590), (20, 1081431), (26, 831870), (27, 801060), (30, 720954), (36, 600795), (39, 554580), (45, 480636), (52, 415935), (54, 400530), (60, 360477), (65, 332748), (78, 277290), (79, 273780), (81, 267020), (90, 240318), (108, 200265), (117, 184860), (130, 166374), (135, 160212), (156, 138645), (158, 136890), (162, 133510), (169, 127980), (180, 120159), (195, 110916), (234, 92430), (237, 91260), (260, 83187), (270, 80106), (316, 68445), (324, 66755), (338, 63990), (351, 61620), (390, 55458), (395, 54756), (405, 53404), (468, 46215), (474, 45630), (507, 42660), (540, 40053), (585, 36972), (676, 31995), (702, 30810), (711, 30420), (780, 27729), (790, 27378), (810, 26702), (845, 25596), (948, 22815), (1014, 21330), (1027, 21060), (1053, 20540), (1170, 18486), (1185, 18252), (1404, 15405), (1422, 15210), (1521, 14220), (1580, 13689), (1620, 13351), (1690, 12798), (1755, 12324), (2028, 10665), (2054, 10530), (2106, 10270), (2133, 10140), (2340, 9243), (2370, 9126), (2535, 8532), (2844, 7605), (3042, 7110), (3081, 7020), (3380, 6399), (3510, 6162), (3555, 6084), (4108, 5265), (4212, 5135), (4266, 5070), (4563, 4740)]