20895105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 42393600

約数和(自身を除く): 21498495

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 79, 105, 165, 229, 231, 237, 385, 395, 553, 687, 869, 1145, 1155, 1185, 1603, 1659, 2519, 2607, 2765, 3435, 4345, 4809, 6083, 7557, 8015, 8295, 12595, 13035, 17633, 18091, 18249, 24045, 30415, 37785, 52899, 54273, 88165, 90455, 91245, 126637, 199001, 264495, 271365, 379911, 597003, 633185, 995005, 1393007, 1899555, 2985015, 4179021, 6965035, 20895105]

約数ペア:

[(1, 20895105), (3, 6965035), (5, 4179021), (7, 2985015), (11, 1899555), (15, 1393007), (21, 995005), (33, 633185), (35, 597003), (55, 379911), (77, 271365), (79, 264495), (105, 199001), (165, 126637), (229, 91245), (231, 90455), (237, 88165), (385, 54273), (395, 52899), (553, 37785), (687, 30415), (869, 24045), (1145, 18249), (1155, 18091), (1185, 17633), (1603, 13035), (1659, 12595), (2519, 8295), (2607, 8015), (2765, 7557), (3435, 6083), (4345, 4809)]