206920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{739}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 532800

約数和(自身を除く): 325880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 739, 1478, 2956, 3695, 5173, 5912, 7390, 10346, 14780, 20692, 25865, 29560, 41384, 51730, 103460, 206920]

約数ペア:

[(1, 206920), (2, 103460), (4, 51730), (5, 41384), (7, 29560), (8, 25865), (10, 20692), (14, 14780), (20, 10346), (28, 7390), (35, 5912), (40, 5173), (56, 3695), (70, 2956), (140, 1478), (280, 739)]