81771680

素因数分解:

$2^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7001}}^1$

素因数の和:7089

約数の個数: 48

約数和(自身を含む): 195859944

約数和(自身を除く): 114088264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 73, 80, 146, 160, 292, 365, 584, 730, 1168, 1460, 2336, 2920, 5840, 7001, 11680, 14002, 28004, 35005, 56008, 70010, 112016, 140020, 224032, 280040, 511073, 560080, 1022146, 1120160, 2044292, 2555365, 4088584, 5110730, 8177168, 10221460, 16354336, 20442920, 40885840, 81771680]

約数ペア:

[(1, 81771680), (2, 40885840), (4, 20442920), (5, 16354336), (8, 10221460), (10, 8177168), (16, 5110730), (20, 4088584), (32, 2555365), (40, 2044292), (73, 1120160), (80, 1022146), (146, 560080), (160, 511073), (292, 280040), (365, 224032), (584, 140020), (730, 112016), (1168, 70010), (1460, 56008), (2336, 35005), (2920, 28004), (5840, 14002), (7001, 11680)]