28999880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 83220480

約数和(自身を除く): 54220600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 91, 104, 124, 130, 140, 155, 182, 217, 248, 257, 260, 280, 310, 364, 403, 434, 455, 514, 520, 620, 728, 806, 868, 910, 1028, 1085, 1240, 1285, 1612, 1736, 1799, 1820, 2015, 2056, 2170, 2570, 2821, 3224, 3341, 3598, 3640, 4030, 4340, 5140, 5642, 6682, 7196, 7967, 8060, 8680, 8995, 10280, 11284, 13364, 14105, 14392, 15934, 16120, 16705, 17990, 22568, 23387, 26728, 28210, 31868, 33410, 35980, 39835, 46774, 55769, 56420, 63736, 66820, 71960, 79670, 93548, 103571, 111538, 112840, 116935, 133640, 159340, 187096, 207142, 223076, 233870, 278845, 318680, 414284, 446152, 467740, 517855, 557690, 724997, 828568, 935480, 1035710, 1115380, 1449994, 2071420, 2230760, 2899988, 3624985, 4142840, 5799976, 7249970, 14499940, 28999880]

約数ペア:

[(1, 28999880), (2, 14499940), (4, 7249970), (5, 5799976), (7, 4142840), (8, 3624985), (10, 2899988), (13, 2230760), (14, 2071420), (20, 1449994), (26, 1115380), (28, 1035710), (31, 935480), (35, 828568), (40, 724997), (52, 557690), (56, 517855), (62, 467740), (65, 446152), (70, 414284), (91, 318680), (104, 278845), (124, 233870), (130, 223076), (140, 207142), (155, 187096), (182, 159340), (217, 133640), (248, 116935), (257, 112840), (260, 111538), (280, 103571), (310, 93548), (364, 79670), (403, 71960), (434, 66820), (455, 63736), (514, 56420), (520, 55769), (620, 46774), (728, 39835), (806, 35980), (868, 33410), (910, 31868), (1028, 28210), (1085, 26728), (1240, 23387), (1285, 22568), (1612, 17990), (1736, 16705), (1799, 16120), (1820, 15934), (2015, 14392), (2056, 14105), (2170, 13364), (2570, 11284), (2821, 10280), (3224, 8995), (3341, 8680), (3598, 8060), (3640, 7967), (4030, 7196), (4340, 6682), (5140, 5642)]