201720180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{42557}}^1$

素因数の和:42648

約数の個数: 48

約数和(自身を含む): 571979520

約数和(自身を除く): 370259340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4740, 42557, 85114, 127671, 170228, 212785, 255342, 425570, 510684, 638355, 851140, 1276710, 2553420, 3362003, 6724006, 10086009, 13448012, 16810015, 20172018, 33620030, 40344036, 50430045, 67240060, 100860090, 201720180]

約数ペア:

[(1, 201720180), (2, 100860090), (3, 67240060), (4, 50430045), (5, 40344036), (6, 33620030), (10, 20172018), (12, 16810015), (15, 13448012), (20, 10086009), (30, 6724006), (60, 3362003), (79, 2553420), (158, 1276710), (237, 851140), (316, 638355), (395, 510684), (474, 425570), (790, 255342), (948, 212785), (1185, 170228), (1580, 127671), (2370, 85114), (4740, 42557)]