21862888

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 42318720

約数和(自身を除く): 20455832

約数列:

[1, 2, 4, 8, 61, 71, 122, 142, 244, 284, 488, 568, 631, 1262, 2524, 4331, 5048, 8662, 17324, 34648, 38491, 44801, 76982, 89602, 153964, 179204, 307928, 358408, 2732861, 5465722, 10931444, 21862888]

約数ペア:

[(1, 21862888), (2, 10931444), (4, 5465722), (8, 2732861), (61, 358408), (71, 307928), (122, 179204), (142, 153964), (244, 89602), (284, 76982), (488, 44801), (568, 38491), (631, 34648), (1262, 17324), (2524, 8662), (4331, 5048)]