21432920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{733}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 52319520

約数和(自身を除く): 30886600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 680, 731, 733, 860, 1462, 1466, 1720, 2924, 2932, 3655, 3665, 5848, 5864, 7310, 7330, 12461, 14620, 14660, 24922, 29240, 29320, 31519, 49844, 62305, 63038, 99688, 124610, 126076, 157595, 249220, 252152, 315190, 498440, 535823, 630380, 1071646, 1260760, 2143292, 2679115, 4286584, 5358230, 10716460, 21432920]

約数ペア:

[(1, 21432920), (2, 10716460), (4, 5358230), (5, 4286584), (8, 2679115), (10, 2143292), (17, 1260760), (20, 1071646), (34, 630380), (40, 535823), (43, 498440), (68, 315190), (85, 252152), (86, 249220), (136, 157595), (170, 126076), (172, 124610), (215, 99688), (340, 63038), (344, 62305), (430, 49844), (680, 31519), (731, 29320), (733, 29240), (860, 24922), (1462, 14660), (1466, 14620), (1720, 12461), (2924, 7330), (2932, 7310), (3655, 5864), (3665, 5848)]