20112560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 51184224

約数和(自身を除く): 31071664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 83, 104, 130, 166, 208, 233, 260, 332, 415, 466, 520, 664, 830, 932, 1040, 1079, 1165, 1328, 1660, 1864, 2158, 2330, 3029, 3320, 3728, 4316, 4660, 5395, 6058, 6640, 8632, 9320, 10790, 12116, 15145, 17264, 18640, 19339, 21580, 24232, 30290, 38678, 43160, 48464, 60580, 77356, 86320, 96695, 121160, 154712, 193390, 242320, 251407, 309424, 386780, 502814, 773560, 1005628, 1257035, 1547120, 2011256, 2514070, 4022512, 5028140, 10056280, 20112560]

約数ペア:

[(1, 20112560), (2, 10056280), (4, 5028140), (5, 4022512), (8, 2514070), (10, 2011256), (13, 1547120), (16, 1257035), (20, 1005628), (26, 773560), (40, 502814), (52, 386780), (65, 309424), (80, 251407), (83, 242320), (104, 193390), (130, 154712), (166, 121160), (208, 96695), (233, 86320), (260, 77356), (332, 60580), (415, 48464), (466, 43160), (520, 38678), (664, 30290), (830, 24232), (932, 21580), (1040, 19339), (1079, 18640), (1165, 17264), (1328, 15145), (1660, 12116), (1864, 10790), (2158, 9320), (2330, 8632), (3029, 6640), (3320, 6058), (3728, 5395), (4316, 4660)]