81073880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 187488000

約数和(自身を除く): 106414120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 149, 223, 244, 298, 305, 446, 488, 596, 610, 745, 892, 1115, 1192, 1220, 1490, 1784, 2230, 2440, 2980, 4460, 5960, 8920, 9089, 13603, 18178, 27206, 33227, 36356, 45445, 54412, 66454, 68015, 72712, 90890, 108824, 132908, 136030, 166135, 181780, 265816, 272060, 332270, 363560, 544120, 664540, 1329080, 2026847, 4053694, 8107388, 10134235, 16214776, 20268470, 40536940, 81073880]

約数ペア:

[(1, 81073880), (2, 40536940), (4, 20268470), (5, 16214776), (8, 10134235), (10, 8107388), (20, 4053694), (40, 2026847), (61, 1329080), (122, 664540), (149, 544120), (223, 363560), (244, 332270), (298, 272060), (305, 265816), (446, 181780), (488, 166135), (596, 136030), (610, 132908), (745, 108824), (892, 90890), (1115, 72712), (1192, 68015), (1220, 66454), (1490, 54412), (1784, 45445), (2230, 36356), (2440, 33227), (2980, 27206), (4460, 18178), (5960, 13603), (8920, 9089)]