28474920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:240

約数の個数: 192

約数和(自身を含む): 102211200

約数和(自身を除く): 73736280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 23, 24, 30, 36, 38, 40, 45, 46, 57, 60, 69, 72, 76, 90, 92, 95, 114, 115, 120, 138, 152, 171, 180, 181, 184, 190, 207, 228, 230, 276, 285, 342, 345, 360, 362, 380, 414, 437, 456, 460, 543, 552, 570, 684, 690, 724, 760, 828, 855, 874, 905, 920, 1035, 1086, 1140, 1311, 1368, 1380, 1448, 1629, 1656, 1710, 1748, 1810, 2070, 2172, 2185, 2280, 2622, 2715, 2760, 3258, 3420, 3439, 3496, 3620, 3933, 4140, 4163, 4344, 4370, 5244, 5430, 6516, 6555, 6840, 6878, 7240, 7866, 8145, 8280, 8326, 8740, 10317, 10488, 10860, 12489, 13032, 13110, 13756, 15732, 16290, 16652, 17195, 17480, 19665, 20634, 20815, 21720, 24978, 26220, 27512, 30951, 31464, 32580, 33304, 34390, 37467, 39330, 41268, 41630, 49956, 51585, 52440, 61902, 62445, 65160, 68780, 74934, 78660, 79097, 82536, 83260, 99912, 103170, 123804, 124890, 137560, 149868, 154755, 157320, 158194, 166520, 187335, 206340, 237291, 247608, 249780, 299736, 309510, 316388, 374670, 395485, 412680, 474582, 499560, 619020, 632776, 711873, 749340, 790970, 949164, 1186455, 1238040, 1423746, 1498680, 1581940, 1898328, 2372910, 2847492, 3163880, 3559365, 4745820, 5694984, 7118730, 9491640, 14237460, 28474920]

約数ペア:

[(1, 28474920), (2, 14237460), (3, 9491640), (4, 7118730), (5, 5694984), (6, 4745820), (8, 3559365), (9, 3163880), (10, 2847492), (12, 2372910), (15, 1898328), (18, 1581940), (19, 1498680), (20, 1423746), (23, 1238040), (24, 1186455), (30, 949164), (36, 790970), (38, 749340), (40, 711873), (45, 632776), (46, 619020), (57, 499560), (60, 474582), (69, 412680), (72, 395485), (76, 374670), (90, 316388), (92, 309510), (95, 299736), (114, 249780), (115, 247608), (120, 237291), (138, 206340), (152, 187335), (171, 166520), (180, 158194), (181, 157320), (184, 154755), (190, 149868), (207, 137560), (228, 124890), (230, 123804), (276, 103170), (285, 99912), (342, 83260), (345, 82536), (360, 79097), (362, 78660), (380, 74934), (414, 68780), (437, 65160), (456, 62445), (460, 61902), (543, 52440), (552, 51585), (570, 49956), (684, 41630), (690, 41268), (724, 39330), (760, 37467), (828, 34390), (855, 33304), (874, 32580), (905, 31464), (920, 30951), (1035, 27512), (1086, 26220), (1140, 24978), (1311, 21720), (1368, 20815), (1380, 20634), (1448, 19665), (1629, 17480), (1656, 17195), (1710, 16652), (1748, 16290), (1810, 15732), (2070, 13756), (2172, 13110), (2185, 13032), (2280, 12489), (2622, 10860), (2715, 10488), (2760, 10317), (3258, 8740), (3420, 8326), (3439, 8280), (3496, 8145), (3620, 7866), (3933, 7240), (4140, 6878), (4163, 6840), (4344, 6555), (4370, 6516), (5244, 5430)]