20248340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2371}}^1$

素因数の和:2448

約数の個数: 48

約数和(自身を含む): 49413504

約数和(自身を除く): 29165164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2371, 4270, 4742, 8540, 9484, 11855, 16597, 23710, 33194, 47420, 66388, 82985, 144631, 165970, 289262, 331940, 578524, 723155, 1012417, 1446310, 2024834, 2892620, 4049668, 5062085, 10124170, 20248340]

約数ペア:

[(1, 20248340), (2, 10124170), (4, 5062085), (5, 4049668), (7, 2892620), (10, 2024834), (14, 1446310), (20, 1012417), (28, 723155), (35, 578524), (61, 331940), (70, 289262), (122, 165970), (140, 144631), (244, 82985), (305, 66388), (427, 47420), (610, 33194), (854, 23710), (1220, 16597), (1708, 11855), (2135, 9484), (2371, 8540), (4270, 4742)]