21348400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^2$

素因数の和:143

約数の個数: 90

約数和(自身を含む): 55026860

約数和(自身を除く): 33678460

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 53, 76, 80, 95, 100, 106, 152, 190, 200, 212, 265, 304, 380, 400, 424, 475, 530, 760, 848, 950, 1007, 1060, 1325, 1520, 1900, 2014, 2120, 2650, 2809, 3800, 4028, 4240, 5035, 5300, 5618, 7600, 8056, 10070, 10600, 11236, 14045, 16112, 20140, 21200, 22472, 25175, 28090, 40280, 44944, 50350, 53371, 56180, 70225, 80560, 100700, 106742, 112360, 140450, 201400, 213484, 224720, 266855, 280900, 402800, 426968, 533710, 561800, 853936, 1067420, 1123600, 1334275, 2134840, 2668550, 4269680, 5337100, 10674200, 21348400]

約数ペア:

[(1, 21348400), (2, 10674200), (4, 5337100), (5, 4269680), (8, 2668550), (10, 2134840), (16, 1334275), (19, 1123600), (20, 1067420), (25, 853936), (38, 561800), (40, 533710), (50, 426968), (53, 402800), (76, 280900), (80, 266855), (95, 224720), (100, 213484), (106, 201400), (152, 140450), (190, 112360), (200, 106742), (212, 100700), (265, 80560), (304, 70225), (380, 56180), (400, 53371), (424, 50350), (475, 44944), (530, 40280), (760, 28090), (848, 25175), (950, 22472), (1007, 21200), (1060, 20140), (1325, 16112), (1520, 14045), (1900, 11236), (2014, 10600), (2120, 10070), (2650, 8056), (2809, 7600), (3800, 5618), (4028, 5300), (4240, 5035)]