17890340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 41811840

約数和(自身を除く): 23921500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 79, 130, 134, 158, 169, 260, 268, 316, 335, 338, 395, 670, 676, 790, 845, 871, 1027, 1340, 1580, 1690, 1742, 2054, 3380, 3484, 4108, 4355, 5135, 5293, 8710, 10270, 10586, 11323, 13351, 17420, 20540, 21172, 22646, 26465, 26702, 45292, 52930, 53404, 56615, 66755, 68809, 105860, 113230, 133510, 137618, 226460, 267020, 275236, 344045, 688090, 894517, 1376180, 1789034, 3578068, 4472585, 8945170, 17890340]

約数ペア:

[(1, 17890340), (2, 8945170), (4, 4472585), (5, 3578068), (10, 1789034), (13, 1376180), (20, 894517), (26, 688090), (52, 344045), (65, 275236), (67, 267020), (79, 226460), (130, 137618), (134, 133510), (158, 113230), (169, 105860), (260, 68809), (268, 66755), (316, 56615), (335, 53404), (338, 52930), (395, 45292), (670, 26702), (676, 26465), (790, 22646), (845, 21172), (871, 20540), (1027, 17420), (1340, 13351), (1580, 11323), (1690, 10586), (1742, 10270), (2054, 8710), (3380, 5293), (3484, 5135), (4108, 4355)]