71399960

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{3413}}^1$

素因数の和:3947

約数の個数: 32

約数和(自身を含む): 161004240

約数和(自身を除く): 89604280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 1046, 2092, 2615, 3413, 4184, 5230, 6826, 10460, 13652, 17065, 20920, 27304, 34130, 68260, 136520, 1784999, 3569998, 7139996, 8924995, 14279992, 17849990, 35699980, 71399960]

約数ペア:

[(1, 71399960), (2, 35699980), (4, 17849990), (5, 14279992), (8, 8924995), (10, 7139996), (20, 3569998), (40, 1784999), (523, 136520), (1046, 68260), (2092, 34130), (2615, 27304), (3413, 20920), (4184, 17065), (5230, 13652), (6826, 10460)]