21009200

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{991}}^1$

素因数の和:1062

約数の個数: 60

約数和(自身を含む): 51478848

約数和(自身を除く): 30469648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 400, 424, 530, 848, 991, 1060, 1325, 1982, 2120, 2650, 3964, 4240, 4955, 5300, 7928, 9910, 10600, 15856, 19820, 21200, 24775, 39640, 49550, 52523, 79280, 99100, 105046, 198200, 210092, 262615, 396400, 420184, 525230, 840368, 1050460, 1313075, 2100920, 2626150, 4201840, 5252300, 10504600, 21009200]

約数ペア:

[(1, 21009200), (2, 10504600), (4, 5252300), (5, 4201840), (8, 2626150), (10, 2100920), (16, 1313075), (20, 1050460), (25, 840368), (40, 525230), (50, 420184), (53, 396400), (80, 262615), (100, 210092), (106, 198200), (200, 105046), (212, 99100), (265, 79280), (400, 52523), (424, 49550), (530, 39640), (848, 24775), (991, 21200), (1060, 19820), (1325, 15856), (1982, 10600), (2120, 9910), (2650, 7928), (3964, 5300), (4240, 4955)]