19879580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{953}}^1$

素因数の和:1118

約数の個数: 48

約数和(自身を含む): 48081600

約数和(自身を除く): 28202020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 953, 1043, 1490, 1906, 2086, 2980, 3812, 4172, 4765, 5215, 6671, 9530, 10430, 13342, 19060, 20860, 26684, 33355, 66710, 133420, 141997, 283994, 567988, 709985, 993979, 1419970, 1987958, 2839940, 3975916, 4969895, 9939790, 19879580]

約数ペア:

[(1, 19879580), (2, 9939790), (4, 4969895), (5, 3975916), (7, 2839940), (10, 1987958), (14, 1419970), (20, 993979), (28, 709985), (35, 567988), (70, 283994), (140, 141997), (149, 133420), (298, 66710), (596, 33355), (745, 26684), (953, 20860), (1043, 19060), (1490, 13342), (1906, 10430), (2086, 9530), (2980, 6671), (3812, 5215), (4172, 4765)]