21815760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5347}}^1$

素因数の和:5380

約数の個数: 80

約数和(自身を含む): 71620416

約数和(自身を除く): 49804656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5347, 10694, 16041, 21388, 26735, 32082, 42776, 53470, 64164, 80205, 85552, 90899, 106940, 128328, 160410, 181798, 213880, 256656, 272697, 320820, 363596, 427760, 454495, 545394, 641640, 727192, 908990, 1090788, 1283280, 1363485, 1454384, 1817980, 2181576, 2726970, 3635960, 4363152, 5453940, 7271920, 10907880, 21815760]

約数ペア:

[(1, 21815760), (2, 10907880), (3, 7271920), (4, 5453940), (5, 4363152), (6, 3635960), (8, 2726970), (10, 2181576), (12, 1817980), (15, 1454384), (16, 1363485), (17, 1283280), (20, 1090788), (24, 908990), (30, 727192), (34, 641640), (40, 545394), (48, 454495), (51, 427760), (60, 363596), (68, 320820), (80, 272697), (85, 256656), (102, 213880), (120, 181798), (136, 160410), (170, 128328), (204, 106940), (240, 90899), (255, 85552), (272, 80205), (340, 64164), (408, 53470), (510, 42776), (680, 32082), (816, 26735), (1020, 21388), (1360, 16041), (2040, 10694), (4080, 5347)]