2640180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{557}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 7499520

約数和(自身を除く): 4859340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 557, 790, 948, 1114, 1185, 1580, 1671, 2228, 2370, 2785, 3342, 4740, 5570, 6684, 8355, 11140, 16710, 33420, 44003, 88006, 132009, 176012, 220015, 264018, 440030, 528036, 660045, 880060, 1320090, 2640180]

約数ペア:

[(1, 2640180), (2, 1320090), (3, 880060), (4, 660045), (5, 528036), (6, 440030), (10, 264018), (12, 220015), (15, 176012), (20, 132009), (30, 88006), (60, 44003), (79, 33420), (158, 16710), (237, 11140), (316, 8355), (395, 6684), (474, 5570), (557, 4740), (790, 3342), (948, 2785), (1114, 2370), (1185, 2228), (1580, 1671)]