21203520

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1699}}^1$

素因数の和:1732

約数の個数: 112

約数和(自身を含む): 72542400

約数和(自身を除く): 51338880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1699, 2080, 2496, 3120, 3398, 4160, 5097, 6240, 6796, 8495, 10194, 12480, 13592, 16990, 20388, 22087, 25485, 27184, 33980, 40776, 44174, 50970, 54368, 66261, 67960, 81552, 88348, 101940, 108736, 110435, 132522, 135920, 163104, 176696, 203880, 220870, 265044, 271840, 326208, 331305, 353392, 407760, 441740, 530088, 543680, 662610, 706784, 815520, 883480, 1060176, 1325220, 1413568, 1631040, 1766960, 2120352, 2650440, 3533920, 4240704, 5300880, 7067840, 10601760, 21203520]

約数ペア:

[(1, 21203520), (2, 10601760), (3, 7067840), (4, 5300880), (5, 4240704), (6, 3533920), (8, 2650440), (10, 2120352), (12, 1766960), (13, 1631040), (15, 1413568), (16, 1325220), (20, 1060176), (24, 883480), (26, 815520), (30, 706784), (32, 662610), (39, 543680), (40, 530088), (48, 441740), (52, 407760), (60, 353392), (64, 331305), (65, 326208), (78, 271840), (80, 265044), (96, 220870), (104, 203880), (120, 176696), (130, 163104), (156, 135920), (160, 132522), (192, 110435), (195, 108736), (208, 101940), (240, 88348), (260, 81552), (312, 67960), (320, 66261), (390, 54368), (416, 50970), (480, 44174), (520, 40776), (624, 33980), (780, 27184), (832, 25485), (960, 22087), (1040, 20388), (1248, 16990), (1560, 13592), (1699, 12480), (2080, 10194), (2496, 8495), (3120, 6796), (3398, 6240), (4160, 5097)]