17980967560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7369249}}^1$

素因数の和:7369321

約数の個数: 32

約数和(自身を含む): 41120415000

約数和(自身を除く): 23139447440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7369249, 14738498, 29476996, 36846245, 58953992, 73692490, 147384980, 294769960, 449524189, 899048378, 1798096756, 2247620945, 3596193512, 4495241890, 8990483780, 17980967560]

約数ペア:

[(1, 17980967560), (2, 8990483780), (4, 4495241890), (5, 3596193512), (8, 2247620945), (10, 1798096756), (20, 899048378), (40, 449524189), (61, 294769960), (122, 147384980), (244, 73692490), (305, 58953992), (488, 36846245), (610, 29476996), (1220, 14738498), (2440, 7369249)]