127841180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{457}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 274228416

約数和(自身を除く): 146387236

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 197, 284, 355, 394, 457, 710, 788, 914, 985, 1420, 1828, 1970, 2285, 3940, 4570, 9140, 13987, 27974, 32447, 55948, 64894, 69935, 90029, 129788, 139870, 162235, 180058, 279740, 324470, 360116, 450145, 648940, 900290, 1800580, 6392059, 12784118, 25568236, 31960295, 63920590, 127841180]

約数ペア:

[(1, 127841180), (2, 63920590), (4, 31960295), (5, 25568236), (10, 12784118), (20, 6392059), (71, 1800580), (142, 900290), (197, 648940), (284, 450145), (355, 360116), (394, 324470), (457, 279740), (710, 180058), (788, 162235), (914, 139870), (985, 129788), (1420, 90029), (1828, 69935), (1970, 64894), (2285, 55948), (3940, 32447), (4570, 27974), (9140, 13987)]