18732280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:616

約数の個数: 64

約数和(自身を含む): 48600000

約数和(自身を除く): 29867720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 449, 596, 745, 898, 1043, 1192, 1490, 1796, 2086, 2245, 2980, 3143, 3592, 4172, 4490, 5215, 5960, 6286, 8344, 8980, 10430, 12572, 15715, 17960, 20860, 25144, 31430, 41720, 62860, 66901, 125720, 133802, 267604, 334505, 468307, 535208, 669010, 936614, 1338020, 1873228, 2341535, 2676040, 3746456, 4683070, 9366140, 18732280]

約数ペア:

[(1, 18732280), (2, 9366140), (4, 4683070), (5, 3746456), (7, 2676040), (8, 2341535), (10, 1873228), (14, 1338020), (20, 936614), (28, 669010), (35, 535208), (40, 468307), (56, 334505), (70, 267604), (140, 133802), (149, 125720), (280, 66901), (298, 62860), (449, 41720), (596, 31430), (745, 25144), (898, 20860), (1043, 17960), (1192, 15715), (1490, 12572), (1796, 10430), (2086, 8980), (2245, 8344), (2980, 6286), (3143, 5960), (3592, 5215), (4172, 4490)]