78286660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2\times {\mathrm{73}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 176503320

約数和(自身を除く): 98216660

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 73, 86, 116, 145, 146, 172, 215, 290, 292, 365, 430, 580, 730, 860, 1247, 1460, 1849, 2117, 2494, 3139, 3698, 4234, 4988, 6235, 6278, 7396, 8468, 9245, 10585, 12470, 12556, 15695, 18490, 21170, 24940, 31390, 36980, 42340, 53621, 62780, 91031, 107242, 134977, 182062, 214484, 268105, 269954, 364124, 455155, 536210, 539908, 674885, 910310, 1072420, 1349770, 1820620, 2699540, 3914333, 7828666, 15657332, 19571665, 39143330, 78286660]

約数ペア:

[(1, 78286660), (2, 39143330), (4, 19571665), (5, 15657332), (10, 7828666), (20, 3914333), (29, 2699540), (43, 1820620), (58, 1349770), (73, 1072420), (86, 910310), (116, 674885), (145, 539908), (146, 536210), (172, 455155), (215, 364124), (290, 269954), (292, 268105), (365, 214484), (430, 182062), (580, 134977), (730, 107242), (860, 91031), (1247, 62780), (1460, 53621), (1849, 42340), (2117, 36980), (2494, 31390), (3139, 24940), (3698, 21170), (4234, 18490), (4988, 15695), (6235, 12556), (6278, 12470), (7396, 10585), (8468, 9245)]