18931560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2090

約数の個数: 64

約数和(自身を含む): 57542400

約数和(自身を除く): 38610840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 1997, 2370, 3160, 3994, 4740, 5991, 7988, 9480, 9985, 11982, 15976, 19970, 23964, 29955, 39940, 47928, 59910, 79880, 119820, 157763, 239640, 315526, 473289, 631052, 788815, 946578, 1262104, 1577630, 1893156, 2366445, 3155260, 3786312, 4732890, 6310520, 9465780, 18931560]

約数ペア:

[(1, 18931560), (2, 9465780), (3, 6310520), (4, 4732890), (5, 3786312), (6, 3155260), (8, 2366445), (10, 1893156), (12, 1577630), (15, 1262104), (20, 946578), (24, 788815), (30, 631052), (40, 473289), (60, 315526), (79, 239640), (120, 157763), (158, 119820), (237, 79880), (316, 59910), (395, 47928), (474, 39940), (632, 29955), (790, 23964), (948, 19970), (1185, 15976), (1580, 11982), (1896, 9985), (1997, 9480), (2370, 7988), (3160, 5991), (3994, 4740)]