20197870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1543}}^1$

素因数の和:1585

約数の個数: 64

約数和(自身を含む): 48024576

約数和(自身を除く): 27826706

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 34, 35, 55, 70, 77, 85, 110, 119, 154, 170, 187, 238, 374, 385, 595, 770, 935, 1190, 1309, 1543, 1870, 2618, 3086, 6545, 7715, 10801, 13090, 15430, 16973, 21602, 26231, 33946, 52462, 54005, 84865, 108010, 118811, 131155, 169730, 183617, 237622, 262310, 288541, 367234, 577082, 594055, 918085, 1188110, 1442705, 1836170, 2019787, 2885410, 4039574, 10098935, 20197870]

約数ペア:

[(1, 20197870), (2, 10098935), (5, 4039574), (7, 2885410), (10, 2019787), (11, 1836170), (14, 1442705), (17, 1188110), (22, 918085), (34, 594055), (35, 577082), (55, 367234), (70, 288541), (77, 262310), (85, 237622), (110, 183617), (119, 169730), (154, 131155), (170, 118811), (187, 108010), (238, 84865), (374, 54005), (385, 52462), (595, 33946), (770, 26231), (935, 21602), (1190, 16973), (1309, 15430), (1543, 13090), (1870, 10801), (2618, 7715), (3086, 6545)]