18978936

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 50712480

約数和(自身を除く): 31733544

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 181, 204, 257, 362, 408, 514, 543, 724, 771, 1028, 1086, 1448, 1542, 2056, 2172, 3077, 3084, 4344, 4369, 6154, 6168, 8738, 9231, 12308, 13107, 17476, 18462, 24616, 26214, 34952, 36924, 46517, 52428, 73848, 93034, 104856, 139551, 186068, 279102, 372136, 558204, 790789, 1116408, 1581578, 2372367, 3163156, 4744734, 6326312, 9489468, 18978936]

約数ペア:

[(1, 18978936), (2, 9489468), (3, 6326312), (4, 4744734), (6, 3163156), (8, 2372367), (12, 1581578), (17, 1116408), (24, 790789), (34, 558204), (51, 372136), (68, 279102), (102, 186068), (136, 139551), (181, 104856), (204, 93034), (257, 73848), (362, 52428), (408, 46517), (514, 36924), (543, 34952), (724, 26214), (771, 24616), (1028, 18462), (1086, 17476), (1448, 13107), (1542, 12308), (2056, 9231), (2172, 8738), (3077, 6168), (3084, 6154), (4344, 4369)]