1644904820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{1511}}^1$

素因数の和:1665

約数の個数: 96

約数和(自身を含む): 3840721920

約数和(自身を除く): 2195817100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 79, 106, 130, 158, 212, 260, 265, 316, 395, 530, 689, 790, 1027, 1060, 1378, 1511, 1580, 2054, 2756, 3022, 3445, 4108, 4187, 5135, 6044, 6890, 7555, 8374, 10270, 13780, 15110, 16748, 19643, 20540, 20935, 30220, 39286, 41870, 54431, 78572, 80083, 83740, 98215, 108862, 119369, 160166, 196430, 217724, 238738, 272155, 320332, 392860, 400415, 477476, 544310, 596845, 800830, 1041079, 1088620, 1193690, 1551797, 1601660, 2082158, 2387380, 3103594, 4164316, 5205395, 6207188, 6326557, 7758985, 10410790, 12653114, 15517970, 20821580, 25306228, 31035940, 31632785, 63265570, 82245241, 126531140, 164490482, 328980964, 411226205, 822452410, 1644904820]

約数ペア:

[(1, 1644904820), (2, 822452410), (4, 411226205), (5, 328980964), (10, 164490482), (13, 126531140), (20, 82245241), (26, 63265570), (52, 31632785), (53, 31035940), (65, 25306228), (79, 20821580), (106, 15517970), (130, 12653114), (158, 10410790), (212, 7758985), (260, 6326557), (265, 6207188), (316, 5205395), (395, 4164316), (530, 3103594), (689, 2387380), (790, 2082158), (1027, 1601660), (1060, 1551797), (1378, 1193690), (1511, 1088620), (1580, 1041079), (2054, 800830), (2756, 596845), (3022, 544310), (3445, 477476), (4108, 400415), (4187, 392860), (5135, 320332), (6044, 272155), (6890, 238738), (7555, 217724), (8374, 196430), (10270, 160166), (13780, 119369), (15110, 108862), (16748, 98215), (19643, 83740), (20540, 80083), (20935, 78572), (30220, 54431), (39286, 41870)]