21045960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1499}}^1$

素因数の和:1532

約数の個数: 128

約数和(自身を含む): 75600000

約数和(自身を除く): 54554040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1499, 1560, 1755, 2340, 2808, 2998, 3510, 4497, 4680, 5996, 7020, 7495, 8994, 11992, 13491, 14040, 14990, 17988, 19487, 22485, 26982, 29980, 35976, 38974, 40473, 44970, 53964, 58461, 59960, 67455, 77948, 80946, 89940, 97435, 107928, 116922, 134910, 155896, 161892, 175383, 179880, 194870, 202365, 233844, 269820, 292305, 323784, 350766, 389740, 404730, 467688, 526149, 539640, 584610, 701532, 779480, 809460, 876915, 1052298, 1169220, 1403064, 1618920, 1753830, 2104596, 2338440, 2630745, 3507660, 4209192, 5261490, 7015320, 10522980, 21045960]

約数ペア:

[(1, 21045960), (2, 10522980), (3, 7015320), (4, 5261490), (5, 4209192), (6, 3507660), (8, 2630745), (9, 2338440), (10, 2104596), (12, 1753830), (13, 1618920), (15, 1403064), (18, 1169220), (20, 1052298), (24, 876915), (26, 809460), (27, 779480), (30, 701532), (36, 584610), (39, 539640), (40, 526149), (45, 467688), (52, 404730), (54, 389740), (60, 350766), (65, 323784), (72, 292305), (78, 269820), (90, 233844), (104, 202365), (108, 194870), (117, 179880), (120, 175383), (130, 161892), (135, 155896), (156, 134910), (180, 116922), (195, 107928), (216, 97435), (234, 89940), (260, 80946), (270, 77948), (312, 67455), (351, 59960), (360, 58461), (390, 53964), (468, 44970), (520, 40473), (540, 38974), (585, 35976), (702, 29980), (780, 26982), (936, 22485), (1080, 19487), (1170, 17988), (1404, 14990), (1499, 14040), (1560, 13491), (1755, 11992), (2340, 8994), (2808, 7495), (2998, 7020), (3510, 5996), (4497, 4680)]