21879240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4447}}^1$

素因数の和:4502

約数の個数: 64

約数和(自身を含む): 67253760

約数和(自身を除く): 45374520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 164, 205, 246, 328, 410, 492, 615, 820, 984, 1230, 1640, 2460, 4447, 4920, 8894, 13341, 17788, 22235, 26682, 35576, 44470, 53364, 66705, 88940, 106728, 133410, 177880, 182327, 266820, 364654, 533640, 546981, 729308, 911635, 1093962, 1458616, 1823270, 2187924, 2734905, 3646540, 4375848, 5469810, 7293080, 10939620, 21879240]

約数ペア:

[(1, 21879240), (2, 10939620), (3, 7293080), (4, 5469810), (5, 4375848), (6, 3646540), (8, 2734905), (10, 2187924), (12, 1823270), (15, 1458616), (20, 1093962), (24, 911635), (30, 729308), (40, 546981), (41, 533640), (60, 364654), (82, 266820), (120, 182327), (123, 177880), (164, 133410), (205, 106728), (246, 88940), (328, 66705), (410, 53364), (492, 44470), (615, 35576), (820, 26682), (984, 22235), (1230, 17788), (1640, 13341), (2460, 8894), (4447, 4920)]