31281720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 99144000

約数和(自身を除く): 67862280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 87, 89, 101, 116, 120, 145, 174, 178, 202, 232, 267, 290, 303, 348, 356, 404, 435, 445, 505, 534, 580, 606, 696, 712, 808, 870, 890, 1010, 1068, 1160, 1212, 1335, 1515, 1740, 1780, 2020, 2136, 2424, 2581, 2670, 2929, 3030, 3480, 3560, 4040, 5162, 5340, 5858, 6060, 7743, 8787, 8989, 10324, 10680, 11716, 12120, 12905, 14645, 15486, 17574, 17978, 20648, 23432, 25810, 26967, 29290, 30972, 35148, 35956, 38715, 43935, 44945, 51620, 53934, 58580, 61944, 70296, 71912, 77430, 87870, 89890, 103240, 107868, 117160, 134835, 154860, 175740, 179780, 215736, 260681, 269670, 309720, 351480, 359560, 521362, 539340, 782043, 1042724, 1078680, 1303405, 1564086, 2085448, 2606810, 3128172, 3910215, 5213620, 6256344, 7820430, 10427240, 15640860, 31281720]

約数ペア:

[(1, 31281720), (2, 15640860), (3, 10427240), (4, 7820430), (5, 6256344), (6, 5213620), (8, 3910215), (10, 3128172), (12, 2606810), (15, 2085448), (20, 1564086), (24, 1303405), (29, 1078680), (30, 1042724), (40, 782043), (58, 539340), (60, 521362), (87, 359560), (89, 351480), (101, 309720), (116, 269670), (120, 260681), (145, 215736), (174, 179780), (178, 175740), (202, 154860), (232, 134835), (267, 117160), (290, 107868), (303, 103240), (348, 89890), (356, 87870), (404, 77430), (435, 71912), (445, 70296), (505, 61944), (534, 58580), (580, 53934), (606, 51620), (696, 44945), (712, 43935), (808, 38715), (870, 35956), (890, 35148), (1010, 30972), (1068, 29290), (1160, 26967), (1212, 25810), (1335, 23432), (1515, 20648), (1740, 17978), (1780, 17574), (2020, 15486), (2136, 14645), (2424, 12905), (2581, 12120), (2670, 11716), (2929, 10680), (3030, 10324), (3480, 8989), (3560, 8787), (4040, 7743), (5162, 6060), (5340, 5858)]