31511480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:829

約数の個数: 128

約数和(自身を含む): 95316480

約数和(自身を除く): 63805000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 787, 910, 1001, 1144, 1430, 1540, 1574, 1820, 2002, 2860, 3080, 3148, 3640, 3935, 4004, 5005, 5509, 5720, 6296, 7870, 8008, 8657, 10010, 10231, 11018, 15740, 17314, 20020, 20462, 22036, 27545, 31480, 34628, 40040, 40924, 43285, 44072, 51155, 55090, 60599, 69256, 71617, 81848, 86570, 102310, 110180, 112541, 121198, 143234, 173140, 204620, 220360, 225082, 242396, 286468, 302995, 346280, 358085, 409240, 450164, 484792, 562705, 572936, 605990, 716170, 787787, 900328, 1125410, 1211980, 1432340, 1575574, 2250820, 2423960, 2864680, 3151148, 3938935, 4501640, 6302296, 7877870, 15755740, 31511480]

約数ペア:

[(1, 31511480), (2, 15755740), (4, 7877870), (5, 6302296), (7, 4501640), (8, 3938935), (10, 3151148), (11, 2864680), (13, 2423960), (14, 2250820), (20, 1575574), (22, 1432340), (26, 1211980), (28, 1125410), (35, 900328), (40, 787787), (44, 716170), (52, 605990), (55, 572936), (56, 562705), (65, 484792), (70, 450164), (77, 409240), (88, 358085), (91, 346280), (104, 302995), (110, 286468), (130, 242396), (140, 225082), (143, 220360), (154, 204620), (182, 173140), (220, 143234), (260, 121198), (280, 112541), (286, 110180), (308, 102310), (364, 86570), (385, 81848), (440, 71617), (455, 69256), (520, 60599), (572, 55090), (616, 51155), (715, 44072), (728, 43285), (770, 40924), (787, 40040), (910, 34628), (1001, 31480), (1144, 27545), (1430, 22036), (1540, 20462), (1574, 20020), (1820, 17314), (2002, 15740), (2860, 11018), (3080, 10231), (3148, 10010), (3640, 8657), (3935, 8008), (4004, 7870), (5005, 6296), (5509, 5720)]