20478510

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{761}}^1$

素因数の和:810

約数の個数: 96

約数和(自身を含む): 59911488

約数和(自身を除く): 39432978

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 23, 26, 30, 39, 45, 46, 65, 69, 78, 90, 115, 117, 130, 138, 195, 207, 230, 234, 299, 345, 390, 414, 585, 598, 690, 761, 897, 1035, 1170, 1495, 1522, 1794, 2070, 2283, 2691, 2990, 3805, 4485, 4566, 5382, 6849, 7610, 8970, 9893, 11415, 13455, 13698, 17503, 19786, 22830, 26910, 29679, 34245, 35006, 49465, 52509, 59358, 68490, 87515, 89037, 98930, 105018, 148395, 157527, 175030, 178074, 227539, 262545, 296790, 315054, 445185, 455078, 525090, 682617, 787635, 890370, 1137695, 1365234, 1575270, 2047851, 2275390, 3413085, 4095702, 6826170, 10239255, 20478510]

約数ペア:

[(1, 20478510), (2, 10239255), (3, 6826170), (5, 4095702), (6, 3413085), (9, 2275390), (10, 2047851), (13, 1575270), (15, 1365234), (18, 1137695), (23, 890370), (26, 787635), (30, 682617), (39, 525090), (45, 455078), (46, 445185), (65, 315054), (69, 296790), (78, 262545), (90, 227539), (115, 178074), (117, 175030), (130, 157527), (138, 148395), (195, 105018), (207, 98930), (230, 89037), (234, 87515), (299, 68490), (345, 59358), (390, 52509), (414, 49465), (585, 35006), (598, 34245), (690, 29679), (761, 26910), (897, 22830), (1035, 19786), (1170, 17503), (1495, 13698), (1522, 13455), (1794, 11415), (2070, 9893), (2283, 8970), (2691, 7610), (2990, 6849), (3805, 5382), (4485, 4566)]