20071688

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{349}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 47040000

約数和(自身を除く): 26968312

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 79, 91, 104, 158, 182, 316, 349, 364, 553, 632, 698, 728, 1027, 1106, 1396, 2054, 2212, 2443, 2792, 4108, 4424, 4537, 4886, 7189, 8216, 9074, 9772, 14378, 18148, 19544, 27571, 28756, 31759, 36296, 55142, 57512, 63518, 110284, 127036, 192997, 220568, 254072, 358423, 385994, 716846, 771988, 1433692, 1543976, 2508961, 2867384, 5017922, 10035844, 20071688]

約数ペア:

[(1, 20071688), (2, 10035844), (4, 5017922), (7, 2867384), (8, 2508961), (13, 1543976), (14, 1433692), (26, 771988), (28, 716846), (52, 385994), (56, 358423), (79, 254072), (91, 220568), (104, 192997), (158, 127036), (182, 110284), (316, 63518), (349, 57512), (364, 55142), (553, 36296), (632, 31759), (698, 28756), (728, 27571), (1027, 19544), (1106, 18148), (1396, 14378), (2054, 9772), (2212, 9074), (2443, 8216), (2792, 7189), (4108, 4886), (4424, 4537)]