81357380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1483}}^1$

素因数の和:1716

約数の個数: 48

約数和(自身を含む): 184989504

約数和(自身を除く): 103632124

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 211, 260, 422, 844, 1055, 1483, 2110, 2743, 2966, 4220, 5486, 5932, 7415, 10972, 13715, 14830, 19279, 27430, 29660, 38558, 54860, 77116, 96395, 192790, 312913, 385580, 625826, 1251652, 1564565, 3129130, 4067869, 6258260, 8135738, 16271476, 20339345, 40678690, 81357380]

約数ペア:

[(1, 81357380), (2, 40678690), (4, 20339345), (5, 16271476), (10, 8135738), (13, 6258260), (20, 4067869), (26, 3129130), (52, 1564565), (65, 1251652), (130, 625826), (211, 385580), (260, 312913), (422, 192790), (844, 96395), (1055, 77116), (1483, 54860), (2110, 38558), (2743, 29660), (2966, 27430), (4220, 19279), (5486, 14830), (5932, 13715), (7415, 10972)]