20858528080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{11681}}^1$

素因数の和:11825

約数の個数: 160

約数和(自身を含む): 55850987808

約数和(自身を除く): 34992459728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 101, 104, 130, 136, 170, 202, 208, 221, 260, 272, 340, 404, 442, 505, 520, 680, 808, 884, 1010, 1040, 1105, 1313, 1360, 1616, 1717, 1768, 2020, 2210, 2626, 3434, 3536, 4040, 4420, 5252, 6565, 6868, 8080, 8585, 8840, 10504, 11681, 13130, 13736, 17170, 17680, 21008, 22321, 23362, 26260, 27472, 34340, 44642, 46724, 52520, 58405, 68680, 89284, 93448, 105040, 111605, 116810, 137360, 151853, 178568, 186896, 198577, 223210, 233620, 303706, 357136, 397154, 446420, 467240, 607412, 759265, 794308, 892840, 934480, 992885, 1179781, 1214824, 1518530, 1588616, 1785680, 1985770, 2359562, 2429648, 2581501, 3037060, 3177232, 3971540, 4719124, 5163002, 5898905, 6074120, 7943080, 9438248, 10326004, 11797810, 12148240, 12907505, 15337153, 15886160, 18876496, 20056277, 20652008, 23595620, 25815010, 30674306, 40112554, 41304016, 47191240, 51630020, 61348612, 76685765, 80225108, 94382480, 100281385, 103260040, 122697224, 153371530, 160450216, 200562770, 206520080, 245394448, 260731601, 306743060, 320900432, 401125540, 521463202, 613486120, 802251080, 1042926404, 1226972240, 1303658005, 1604502160, 2085852808, 2607316010, 4171705616, 5214632020, 10429264040, 20858528080]

約数ペア:

[(1, 20858528080), (2, 10429264040), (4, 5214632020), (5, 4171705616), (8, 2607316010), (10, 2085852808), (13, 1604502160), (16, 1303658005), (17, 1226972240), (20, 1042926404), (26, 802251080), (34, 613486120), (40, 521463202), (52, 401125540), (65, 320900432), (68, 306743060), (80, 260731601), (85, 245394448), (101, 206520080), (104, 200562770), (130, 160450216), (136, 153371530), (170, 122697224), (202, 103260040), (208, 100281385), (221, 94382480), (260, 80225108), (272, 76685765), (340, 61348612), (404, 51630020), (442, 47191240), (505, 41304016), (520, 40112554), (680, 30674306), (808, 25815010), (884, 23595620), (1010, 20652008), (1040, 20056277), (1105, 18876496), (1313, 15886160), (1360, 15337153), (1616, 12907505), (1717, 12148240), (1768, 11797810), (2020, 10326004), (2210, 9438248), (2626, 7943080), (3434, 6074120), (3536, 5898905), (4040, 5163002), (4420, 4719124), (5252, 3971540), (6565, 3177232), (6868, 3037060), (8080, 2581501), (8585, 2429648), (8840, 2359562), (10504, 1985770), (11681, 1785680), (13130, 1588616), (13736, 1518530), (17170, 1214824), (17680, 1179781), (21008, 992885), (22321, 934480), (23362, 892840), (26260, 794308), (27472, 759265), (34340, 607412), (44642, 467240), (46724, 446420), (52520, 397154), (58405, 357136), (68680, 303706), (89284, 233620), (93448, 223210), (105040, 198577), (111605, 186896), (116810, 178568), (137360, 151853)]