20029940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{827}}^1$

素因数の和:1016

約数の個数: 48

約数和(自身を含む): 48408192

約数和(自身を除く): 28378252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 827, 865, 1211, 1654, 1730, 2422, 3308, 3460, 4135, 4844, 5789, 6055, 8270, 11578, 12110, 16540, 23156, 24220, 28945, 57890, 115780, 143071, 286142, 572284, 715355, 1001497, 1430710, 2002994, 2861420, 4005988, 5007485, 10014970, 20029940]

約数ペア:

[(1, 20029940), (2, 10014970), (4, 5007485), (5, 4005988), (7, 2861420), (10, 2002994), (14, 1430710), (20, 1001497), (28, 715355), (35, 572284), (70, 286142), (140, 143071), (173, 115780), (346, 57890), (692, 28945), (827, 24220), (865, 23156), (1211, 16540), (1654, 12110), (1730, 11578), (2422, 8270), (3308, 6055), (3460, 5789), (4135, 4844)]