291212780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{8231}}^1$

素因数の和:8330

約数の個数: 48

約数和(自身を含む): 643083840

約数和(自身を除く): 351871060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 580, 610, 1220, 1769, 3538, 7076, 8231, 8845, 16462, 17690, 32924, 35380, 41155, 82310, 164620, 238699, 477398, 502091, 954796, 1004182, 1193495, 2008364, 2386990, 2510455, 4773980, 5020910, 10041820, 14560639, 29121278, 58242556, 72803195, 145606390, 291212780]

約数ペア:

[(1, 291212780), (2, 145606390), (4, 72803195), (5, 58242556), (10, 29121278), (20, 14560639), (29, 10041820), (58, 5020910), (61, 4773980), (116, 2510455), (122, 2386990), (145, 2008364), (244, 1193495), (290, 1004182), (305, 954796), (580, 502091), (610, 477398), (1220, 238699), (1769, 164620), (3538, 82310), (7076, 41155), (8231, 35380), (8845, 32924), (16462, 17690)]