20726790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{431}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 57231360

約数和(自身を除く): 36504570

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 229, 431, 458, 687, 862, 1145, 1293, 1374, 1603, 2155, 2290, 2586, 3017, 3206, 3435, 4310, 4809, 6034, 6465, 6870, 8015, 9051, 9618, 12930, 15085, 16030, 18102, 24045, 30170, 45255, 48090, 90510, 98699, 197398, 296097, 493495, 592194, 690893, 986990, 1381786, 1480485, 2072679, 2960970, 3454465, 4145358, 6908930, 10363395, 20726790]

約数ペア:

[(1, 20726790), (2, 10363395), (3, 6908930), (5, 4145358), (6, 3454465), (7, 2960970), (10, 2072679), (14, 1480485), (15, 1381786), (21, 986990), (30, 690893), (35, 592194), (42, 493495), (70, 296097), (105, 197398), (210, 98699), (229, 90510), (431, 48090), (458, 45255), (687, 30170), (862, 24045), (1145, 18102), (1293, 16030), (1374, 15085), (1603, 12930), (2155, 9618), (2290, 9051), (2586, 8015), (3017, 6870), (3206, 6465), (3435, 6034), (4310, 4809)]