21012800

素因数分解:

$2^6\times 5^2\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:616

約数の個数: 84

約数和(自身を含む): 54047136

約数和(自身を除く): 33034336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 115, 160, 184, 200, 230, 320, 368, 400, 460, 571, 575, 736, 800, 920, 1142, 1150, 1472, 1600, 1840, 2284, 2300, 2855, 3680, 4568, 4600, 5710, 7360, 9136, 9200, 11420, 13133, 14275, 18272, 18400, 22840, 26266, 28550, 36544, 36800, 45680, 52532, 57100, 65665, 91360, 105064, 114200, 131330, 182720, 210128, 228400, 262660, 328325, 420256, 456800, 525320, 656650, 840512, 913600, 1050640, 1313300, 2101280, 2626600, 4202560, 5253200, 10506400, 21012800]

約数ペア:

[(1, 21012800), (2, 10506400), (4, 5253200), (5, 4202560), (8, 2626600), (10, 2101280), (16, 1313300), (20, 1050640), (23, 913600), (25, 840512), (32, 656650), (40, 525320), (46, 456800), (50, 420256), (64, 328325), (80, 262660), (92, 228400), (100, 210128), (115, 182720), (160, 131330), (184, 114200), (200, 105064), (230, 91360), (320, 65665), (368, 57100), (400, 52532), (460, 45680), (571, 36800), (575, 36544), (736, 28550), (800, 26266), (920, 22840), (1142, 18400), (1150, 18272), (1472, 14275), (1600, 13133), (1840, 11420), (2284, 9200), (2300, 9136), (2855, 7360), (3680, 5710), (4568, 4600)]