31390840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 83280960

約数和(自身を除く): 51890120

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 53, 65, 67, 68, 85, 104, 106, 130, 134, 136, 170, 212, 221, 260, 265, 268, 335, 340, 424, 442, 520, 530, 536, 670, 680, 689, 871, 884, 901, 1060, 1105, 1139, 1340, 1378, 1742, 1768, 1802, 2120, 2210, 2278, 2680, 2756, 3445, 3484, 3551, 3604, 4355, 4420, 4505, 4556, 5512, 5695, 6890, 6968, 7102, 7208, 8710, 8840, 9010, 9112, 11390, 11713, 13780, 14204, 14807, 17420, 17755, 18020, 22780, 23426, 27560, 28408, 29614, 34840, 35510, 36040, 45560, 46163, 46852, 58565, 59228, 60367, 71020, 74035, 92326, 93704, 117130, 118456, 120734, 142040, 148070, 184652, 230815, 234260, 241468, 296140, 301835, 369304, 461630, 468520, 482936, 592280, 603670, 784771, 923260, 1207340, 1569542, 1846520, 2414680, 3139084, 3923855, 6278168, 7847710, 15695420, 31390840]

約数ペア:

[(1, 31390840), (2, 15695420), (4, 7847710), (5, 6278168), (8, 3923855), (10, 3139084), (13, 2414680), (17, 1846520), (20, 1569542), (26, 1207340), (34, 923260), (40, 784771), (52, 603670), (53, 592280), (65, 482936), (67, 468520), (68, 461630), (85, 369304), (104, 301835), (106, 296140), (130, 241468), (134, 234260), (136, 230815), (170, 184652), (212, 148070), (221, 142040), (260, 120734), (265, 118456), (268, 117130), (335, 93704), (340, 92326), (424, 74035), (442, 71020), (520, 60367), (530, 59228), (536, 58565), (670, 46852), (680, 46163), (689, 45560), (871, 36040), (884, 35510), (901, 34840), (1060, 29614), (1105, 28408), (1139, 27560), (1340, 23426), (1378, 22780), (1742, 18020), (1768, 17755), (1802, 17420), (2120, 14807), (2210, 14204), (2278, 13780), (2680, 11713), (2756, 11390), (3445, 9112), (3484, 9010), (3551, 8840), (3604, 8710), (4355, 7208), (4420, 7102), (4505, 6968), (4556, 6890), (5512, 5695)]