20609888

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:176

約数の個数: 72

約数和(自身を含む): 45562608

約数和(自身を除く): 24952720

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 74, 103, 104, 148, 169, 206, 208, 296, 338, 412, 416, 481, 592, 676, 824, 962, 1184, 1339, 1352, 1648, 1924, 2678, 2704, 3296, 3811, 3848, 5356, 5408, 6253, 7622, 7696, 10712, 12506, 15244, 15392, 17407, 21424, 25012, 30488, 34814, 42848, 49543, 50024, 60976, 69628, 99086, 100048, 121952, 139256, 198172, 200096, 278512, 396344, 557024, 644059, 792688, 1288118, 1585376, 2576236, 5152472, 10304944, 20609888]

約数ペア:

[(1, 20609888), (2, 10304944), (4, 5152472), (8, 2576236), (13, 1585376), (16, 1288118), (26, 792688), (32, 644059), (37, 557024), (52, 396344), (74, 278512), (103, 200096), (104, 198172), (148, 139256), (169, 121952), (206, 100048), (208, 99086), (296, 69628), (338, 60976), (412, 50024), (416, 49543), (481, 42848), (592, 34814), (676, 30488), (824, 25012), (962, 21424), (1184, 17407), (1339, 15392), (1352, 15244), (1648, 12506), (1924, 10712), (2678, 7696), (2704, 7622), (3296, 6253), (3811, 5408), (3848, 5356)]