39780020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1907}}^1$

素因数の和:2072

約数の個数: 48

約数和(自身を含む): 96163200

約数和(自身を除く): 56383180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 1907, 2086, 2980, 3814, 4172, 5215, 7628, 9535, 10430, 13349, 19070, 20860, 26698, 38140, 53396, 66745, 133490, 266980, 284143, 568286, 1136572, 1420715, 1989001, 2841430, 3978002, 5682860, 7956004, 9945005, 19890010, 39780020]

約数ペア:

[(1, 39780020), (2, 19890010), (4, 9945005), (5, 7956004), (7, 5682860), (10, 3978002), (14, 2841430), (20, 1989001), (28, 1420715), (35, 1136572), (70, 568286), (140, 284143), (149, 266980), (298, 133490), (596, 66745), (745, 53396), (1043, 38140), (1490, 26698), (1907, 20860), (2086, 19070), (2980, 13349), (3814, 10430), (4172, 9535), (5215, 7628)]