21500970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{563}}^1$

素因数の和:659

約数の個数: 64

約数和(自身を含む): 55226880

約数和(自身を除く): 33725910

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 67, 95, 114, 134, 190, 201, 285, 335, 402, 563, 570, 670, 1005, 1126, 1273, 1689, 2010, 2546, 2815, 3378, 3819, 5630, 6365, 7638, 8445, 10697, 12730, 16890, 19095, 21394, 32091, 37721, 38190, 53485, 64182, 75442, 106970, 113163, 160455, 188605, 226326, 320910, 377210, 565815, 716699, 1131630, 1433398, 2150097, 3583495, 4300194, 7166990, 10750485, 21500970]

約数ペア:

[(1, 21500970), (2, 10750485), (3, 7166990), (5, 4300194), (6, 3583495), (10, 2150097), (15, 1433398), (19, 1131630), (30, 716699), (38, 565815), (57, 377210), (67, 320910), (95, 226326), (114, 188605), (134, 160455), (190, 113163), (201, 106970), (285, 75442), (335, 64182), (402, 53485), (563, 38190), (570, 37721), (670, 32091), (1005, 21394), (1126, 19095), (1273, 16890), (1689, 12730), (2010, 10697), (2546, 8445), (2815, 7638), (3378, 6365), (3819, 5630)]