31219720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2593}}^1$

素因数の和:2654

約数の個数: 64

約数和(自身を含む): 82177920

約数和(自身を除く): 50958200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2408, 2593, 3010, 5186, 6020, 10372, 12040, 12965, 18151, 20744, 25930, 36302, 51860, 72604, 90755, 103720, 111499, 145208, 181510, 222998, 363020, 445996, 557495, 726040, 780493, 891992, 1114990, 1560986, 2229980, 3121972, 3902465, 4459960, 6243944, 7804930, 15609860, 31219720]

約数ペア:

[(1, 31219720), (2, 15609860), (4, 7804930), (5, 6243944), (7, 4459960), (8, 3902465), (10, 3121972), (14, 2229980), (20, 1560986), (28, 1114990), (35, 891992), (40, 780493), (43, 726040), (56, 557495), (70, 445996), (86, 363020), (140, 222998), (172, 181510), (215, 145208), (280, 111499), (301, 103720), (344, 90755), (430, 72604), (602, 51860), (860, 36302), (1204, 25930), (1505, 20744), (1720, 18151), (2408, 12965), (2593, 12040), (3010, 10372), (5186, 6020)]