18640624

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 37363680

約数和(自身を除く): 18723056

約数列:

[1, 2, 4, 8, 16, 61, 71, 122, 142, 244, 269, 284, 488, 538, 568, 976, 1076, 1136, 2152, 4304, 4331, 8662, 16409, 17324, 19099, 32818, 34648, 38198, 65636, 69296, 76396, 131272, 152792, 262544, 305584, 1165039, 2330078, 4660156, 9320312, 18640624]

約数ペア:

[(1, 18640624), (2, 9320312), (4, 4660156), (8, 2330078), (16, 1165039), (61, 305584), (71, 262544), (122, 152792), (142, 131272), (244, 76396), (269, 69296), (284, 65636), (488, 38198), (538, 34648), (568, 32818), (976, 19099), (1076, 17324), (1136, 16409), (2152, 8662), (4304, 4331)]