28221960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:335

約数の個数: 128

約数和(自身を含む): 92736000

約数和(自身を除く): 64514040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 79, 104, 120, 130, 156, 158, 195, 229, 237, 260, 312, 316, 390, 395, 458, 474, 520, 632, 687, 780, 790, 916, 948, 1027, 1145, 1185, 1374, 1560, 1580, 1832, 1896, 2054, 2290, 2370, 2748, 2977, 3081, 3160, 3435, 4108, 4580, 4740, 5135, 5496, 5954, 6162, 6870, 8216, 8931, 9160, 9480, 10270, 11908, 12324, 13740, 14885, 15405, 17862, 18091, 20540, 23816, 24648, 27480, 29770, 30810, 35724, 36182, 41080, 44655, 54273, 59540, 61620, 71448, 72364, 89310, 90455, 108546, 119080, 123240, 144728, 178620, 180910, 217092, 235183, 271365, 357240, 361820, 434184, 470366, 542730, 705549, 723640, 940732, 1085460, 1175915, 1411098, 1881464, 2170920, 2351830, 2822196, 3527745, 4703660, 5644392, 7055490, 9407320, 14110980, 28221960]

約数ペア:

[(1, 28221960), (2, 14110980), (3, 9407320), (4, 7055490), (5, 5644392), (6, 4703660), (8, 3527745), (10, 2822196), (12, 2351830), (13, 2170920), (15, 1881464), (20, 1411098), (24, 1175915), (26, 1085460), (30, 940732), (39, 723640), (40, 705549), (52, 542730), (60, 470366), (65, 434184), (78, 361820), (79, 357240), (104, 271365), (120, 235183), (130, 217092), (156, 180910), (158, 178620), (195, 144728), (229, 123240), (237, 119080), (260, 108546), (312, 90455), (316, 89310), (390, 72364), (395, 71448), (458, 61620), (474, 59540), (520, 54273), (632, 44655), (687, 41080), (780, 36182), (790, 35724), (916, 30810), (948, 29770), (1027, 27480), (1145, 24648), (1185, 23816), (1374, 20540), (1560, 18091), (1580, 17862), (1832, 15405), (1896, 14885), (2054, 13740), (2290, 12324), (2370, 11908), (2748, 10270), (2977, 9480), (3081, 9160), (3160, 8931), (3435, 8216), (4108, 6870), (4580, 6162), (4740, 5954), (5135, 5496)]