21135520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:302

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 36780128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 113, 140, 160, 167, 224, 226, 280, 334, 452, 560, 565, 668, 791, 835, 904, 1120, 1130, 1169, 1336, 1582, 1670, 1808, 2260, 2338, 2672, 3164, 3340, 3616, 3955, 4520, 4676, 5344, 5845, 6328, 6680, 7910, 9040, 9352, 11690, 12656, 13360, 15820, 18080, 18704, 18871, 23380, 25312, 26720, 31640, 37408, 37742, 46760, 63280, 75484, 93520, 94355, 126560, 132097, 150968, 187040, 188710, 264194, 301936, 377420, 528388, 603872, 660485, 754840, 1056776, 1320970, 1509680, 2113552, 2641940, 3019360, 4227104, 5283880, 10567760, 21135520]

約数ペア:

[(1, 21135520), (2, 10567760), (4, 5283880), (5, 4227104), (7, 3019360), (8, 2641940), (10, 2113552), (14, 1509680), (16, 1320970), (20, 1056776), (28, 754840), (32, 660485), (35, 603872), (40, 528388), (56, 377420), (70, 301936), (80, 264194), (112, 188710), (113, 187040), (140, 150968), (160, 132097), (167, 126560), (224, 94355), (226, 93520), (280, 75484), (334, 63280), (452, 46760), (560, 37742), (565, 37408), (668, 31640), (791, 26720), (835, 25312), (904, 23380), (1120, 18871), (1130, 18704), (1169, 18080), (1336, 15820), (1582, 13360), (1670, 12656), (1808, 11690), (2260, 9352), (2338, 9040), (2672, 7910), (3164, 6680), (3340, 6328), (3616, 5845), (3955, 5344), (4520, 4676)]