21576464

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 120

約数和(自身を含む): 54918360

約数和(自身を除く): 33341896

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 29, 49, 52, 56, 58, 73, 91, 98, 104, 112, 116, 146, 182, 196, 203, 208, 232, 292, 364, 377, 392, 406, 464, 511, 584, 637, 728, 754, 784, 812, 949, 1022, 1168, 1274, 1421, 1456, 1508, 1624, 1898, 2044, 2117, 2548, 2639, 2842, 3016, 3248, 3577, 3796, 4088, 4234, 5096, 5278, 5684, 6032, 6643, 7154, 7592, 8176, 8468, 10192, 10556, 11368, 13286, 14308, 14819, 15184, 16936, 18473, 21112, 22736, 26572, 27521, 28616, 29638, 33872, 36946, 42224, 46501, 53144, 55042, 57232, 59276, 73892, 93002, 103733, 106288, 110084, 118552, 147784, 186004, 192647, 207466, 220168, 237104, 295568, 372008, 385294, 414932, 440336, 744016, 770588, 829864, 1348529, 1541176, 1659728, 2697058, 3082352, 5394116, 10788232, 21576464]

約数ペア:

[(1, 21576464), (2, 10788232), (4, 5394116), (7, 3082352), (8, 2697058), (13, 1659728), (14, 1541176), (16, 1348529), (26, 829864), (28, 770588), (29, 744016), (49, 440336), (52, 414932), (56, 385294), (58, 372008), (73, 295568), (91, 237104), (98, 220168), (104, 207466), (112, 192647), (116, 186004), (146, 147784), (182, 118552), (196, 110084), (203, 106288), (208, 103733), (232, 93002), (292, 73892), (364, 59276), (377, 57232), (392, 55042), (406, 53144), (464, 46501), (511, 42224), (584, 36946), (637, 33872), (728, 29638), (754, 28616), (784, 27521), (812, 26572), (949, 22736), (1022, 21112), (1168, 18473), (1274, 16936), (1421, 15184), (1456, 14819), (1508, 14308), (1624, 13286), (1898, 11368), (2044, 10556), (2117, 10192), (2548, 8468), (2639, 8176), (2842, 7592), (3016, 7154), (3248, 6643), (3577, 6032), (3796, 5684), (4088, 5278), (4234, 5096)]