257218992

素因数分解:

$2^4\times 3^2\times {\mathrm{83}}^1\times {\mathrm{21521}}^1$

素因数の和:21618

約数の個数: 60

約数和(自身を含む): 728562744

約数和(自身を除く): 471343752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 83, 144, 166, 249, 332, 498, 664, 747, 996, 1328, 1494, 1992, 2988, 3984, 5976, 11952, 21521, 43042, 64563, 86084, 129126, 172168, 193689, 258252, 344336, 387378, 516504, 774756, 1033008, 1549512, 1786243, 3099024, 3572486, 5358729, 7144972, 10717458, 14289944, 16076187, 21434916, 28579888, 32152374, 42869832, 64304748, 85739664, 128609496, 257218992]

約数ペア:

[(1, 257218992), (2, 128609496), (3, 85739664), (4, 64304748), (6, 42869832), (8, 32152374), (9, 28579888), (12, 21434916), (16, 16076187), (18, 14289944), (24, 10717458), (36, 7144972), (48, 5358729), (72, 3572486), (83, 3099024), (144, 1786243), (166, 1549512), (249, 1033008), (332, 774756), (498, 516504), (664, 387378), (747, 344336), (996, 258252), (1328, 193689), (1494, 172168), (1992, 129126), (2988, 86084), (3984, 64563), (5976, 43042), (11952, 21521)]