20918144

素因数分解:

$2^7\times {\mathrm{13}}^2\times {\mathrm{967}}^1$

素因数の和:1007

約数の個数: 48

約数和(自身を含む): 45171720

約数和(自身を除く): 24253576

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 338, 416, 676, 832, 967, 1352, 1664, 1934, 2704, 3868, 5408, 7736, 10816, 12571, 15472, 21632, 25142, 30944, 50284, 61888, 100568, 123776, 163423, 201136, 326846, 402272, 653692, 804544, 1307384, 1609088, 2614768, 5229536, 10459072, 20918144]

約数ペア:

[(1, 20918144), (2, 10459072), (4, 5229536), (8, 2614768), (13, 1609088), (16, 1307384), (26, 804544), (32, 653692), (52, 402272), (64, 326846), (104, 201136), (128, 163423), (169, 123776), (208, 100568), (338, 61888), (416, 50284), (676, 30944), (832, 25142), (967, 21632), (1352, 15472), (1664, 12571), (1934, 10816), (2704, 7736), (3868, 5408)]