205465910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:665

約数の個数: 64

約数和(自身を含む): 424569600

約数和(自身を除く): 219103690

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 239, 389, 442, 478, 778, 1105, 1195, 1945, 2210, 2390, 3107, 3890, 4063, 5057, 6214, 6613, 8126, 10114, 13226, 15535, 20315, 25285, 31070, 33065, 40630, 50570, 52819, 66130, 85969, 92971, 105638, 171938, 185942, 264095, 429845, 464855, 528190, 859690, 929710, 1208623, 1580507, 2417246, 3161014, 6043115, 7902535, 12086230, 15805070, 20546591, 41093182, 102732955, 205465910]

約数ペア:

[(1, 205465910), (2, 102732955), (5, 41093182), (10, 20546591), (13, 15805070), (17, 12086230), (26, 7902535), (34, 6043115), (65, 3161014), (85, 2417246), (130, 1580507), (170, 1208623), (221, 929710), (239, 859690), (389, 528190), (442, 464855), (478, 429845), (778, 264095), (1105, 185942), (1195, 171938), (1945, 105638), (2210, 92971), (2390, 85969), (3107, 66130), (3890, 52819), (4063, 50570), (5057, 40630), (6214, 33065), (6613, 31070), (8126, 25285), (10114, 20315), (13226, 15535)]