21112728

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1381}}^1$

素因数の和:1417

約数の個数: 96

約数和(自身を含む): 66170160

約数和(自身を除く): 45057432

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 49, 52, 56, 78, 84, 91, 98, 104, 147, 156, 168, 182, 196, 273, 294, 312, 364, 392, 546, 588, 637, 728, 1092, 1176, 1274, 1381, 1911, 2184, 2548, 2762, 3822, 4143, 5096, 5524, 7644, 8286, 9667, 11048, 15288, 16572, 17953, 19334, 29001, 33144, 35906, 38668, 53859, 58002, 67669, 71812, 77336, 107718, 116004, 125671, 135338, 143624, 203007, 215436, 232008, 251342, 270676, 377013, 406014, 430872, 502684, 541352, 754026, 812028, 879697, 1005368, 1508052, 1624056, 1759394, 2639091, 3016104, 3518788, 5278182, 7037576, 10556364, 21112728]

約数ペア:

[(1, 21112728), (2, 10556364), (3, 7037576), (4, 5278182), (6, 3518788), (7, 3016104), (8, 2639091), (12, 1759394), (13, 1624056), (14, 1508052), (21, 1005368), (24, 879697), (26, 812028), (28, 754026), (39, 541352), (42, 502684), (49, 430872), (52, 406014), (56, 377013), (78, 270676), (84, 251342), (91, 232008), (98, 215436), (104, 203007), (147, 143624), (156, 135338), (168, 125671), (182, 116004), (196, 107718), (273, 77336), (294, 71812), (312, 67669), (364, 58002), (392, 53859), (546, 38668), (588, 35906), (637, 33144), (728, 29001), (1092, 19334), (1176, 17953), (1274, 16572), (1381, 15288), (1911, 11048), (2184, 9667), (2548, 8286), (2762, 7644), (3822, 5524), (4143, 5096)]