20616240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:227

約数の個数: 160

約数和(自身を含む): 70281216

約数和(自身を除く): 49664976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 31, 34, 40, 48, 51, 60, 62, 68, 80, 85, 93, 102, 120, 124, 136, 155, 163, 170, 186, 204, 240, 248, 255, 272, 310, 326, 340, 372, 408, 465, 489, 496, 510, 527, 620, 652, 680, 744, 815, 816, 930, 978, 1020, 1054, 1240, 1304, 1360, 1488, 1581, 1630, 1860, 1956, 2040, 2108, 2445, 2480, 2608, 2635, 2771, 3162, 3260, 3720, 3912, 4080, 4216, 4890, 5053, 5270, 5542, 6324, 6520, 7440, 7824, 7905, 8313, 8432, 9780, 10106, 10540, 11084, 12648, 13040, 13855, 15159, 15810, 16626, 19560, 20212, 21080, 22168, 25265, 25296, 27710, 30318, 31620, 33252, 39120, 40424, 41565, 42160, 44336, 50530, 55420, 60636, 63240, 66504, 75795, 80848, 83130, 85901, 101060, 110840, 121272, 126480, 133008, 151590, 166260, 171802, 202120, 221680, 242544, 257703, 303180, 332520, 343604, 404240, 429505, 515406, 606360, 665040, 687208, 859010, 1030812, 1212720, 1288515, 1374416, 1718020, 2061624, 2577030, 3436040, 4123248, 5154060, 6872080, 10308120, 20616240]

約数ペア:

[(1, 20616240), (2, 10308120), (3, 6872080), (4, 5154060), (5, 4123248), (6, 3436040), (8, 2577030), (10, 2061624), (12, 1718020), (15, 1374416), (16, 1288515), (17, 1212720), (20, 1030812), (24, 859010), (30, 687208), (31, 665040), (34, 606360), (40, 515406), (48, 429505), (51, 404240), (60, 343604), (62, 332520), (68, 303180), (80, 257703), (85, 242544), (93, 221680), (102, 202120), (120, 171802), (124, 166260), (136, 151590), (155, 133008), (163, 126480), (170, 121272), (186, 110840), (204, 101060), (240, 85901), (248, 83130), (255, 80848), (272, 75795), (310, 66504), (326, 63240), (340, 60636), (372, 55420), (408, 50530), (465, 44336), (489, 42160), (496, 41565), (510, 40424), (527, 39120), (620, 33252), (652, 31620), (680, 30318), (744, 27710), (815, 25296), (816, 25265), (930, 22168), (978, 21080), (1020, 20212), (1054, 19560), (1240, 16626), (1304, 15810), (1360, 15159), (1488, 13855), (1581, 13040), (1630, 12648), (1860, 11084), (1956, 10540), (2040, 10106), (2108, 9780), (2445, 8432), (2480, 8313), (2608, 7905), (2635, 7824), (2771, 7440), (3162, 6520), (3260, 6324), (3720, 5542), (3912, 5270), (4080, 5053), (4216, 4890)]