640494

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{409}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 1476000

約数和(自身を除く): 835506

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 87, 174, 261, 409, 522, 783, 818, 1227, 1566, 2454, 3681, 7362, 11043, 11861, 22086, 23722, 35583, 71166, 106749, 213498, 320247, 640494]

約数ペア:

[(1, 640494), (2, 320247), (3, 213498), (6, 106749), (9, 71166), (18, 35583), (27, 23722), (29, 22086), (54, 11861), (58, 11043), (87, 7362), (174, 3681), (261, 2454), (409, 1566), (522, 1227), (783, 818)]