68908280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{571}}^1$

素因数の和:1020

約数の個数: 64

約数和(自身を含む): 177914880

約数和(自身を除く): 109006600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 431, 571, 862, 1142, 1724, 2155, 2284, 2855, 3017, 3448, 3997, 4310, 4568, 5710, 6034, 7994, 8620, 11420, 12068, 15085, 15988, 17240, 19985, 22840, 24136, 30170, 31976, 39970, 60340, 79940, 120680, 159880, 246101, 492202, 984404, 1230505, 1722707, 1968808, 2461010, 3445414, 4922020, 6890828, 8613535, 9844040, 13781656, 17227070, 34454140, 68908280]

約数ペア:

[(1, 68908280), (2, 34454140), (4, 17227070), (5, 13781656), (7, 9844040), (8, 8613535), (10, 6890828), (14, 4922020), (20, 3445414), (28, 2461010), (35, 1968808), (40, 1722707), (56, 1230505), (70, 984404), (140, 492202), (280, 246101), (431, 159880), (571, 120680), (862, 79940), (1142, 60340), (1724, 39970), (2155, 31976), (2284, 30170), (2855, 24136), (3017, 22840), (3448, 19985), (3997, 17240), (4310, 15988), (4568, 15085), (5710, 12068), (6034, 11420), (7994, 8620)]