20306780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{941}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 46527264

約数和(自身を除く): 26220484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 260, 332, 415, 830, 941, 1079, 1660, 1882, 2158, 3764, 4316, 4705, 5395, 9410, 10790, 12233, 18820, 21580, 24466, 48932, 61165, 78103, 122330, 156206, 244660, 312412, 390515, 781030, 1015339, 1562060, 2030678, 4061356, 5076695, 10153390, 20306780]

約数ペア:

[(1, 20306780), (2, 10153390), (4, 5076695), (5, 4061356), (10, 2030678), (13, 1562060), (20, 1015339), (26, 781030), (52, 390515), (65, 312412), (83, 244660), (130, 156206), (166, 122330), (260, 78103), (332, 61165), (415, 48932), (830, 24466), (941, 21580), (1079, 18820), (1660, 12233), (1882, 10790), (2158, 9410), (3764, 5395), (4316, 4705)]