20456214512

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{420149}}^1$

素因数の和:420353

約数の個数: 40

約数和(自身を含む): 42199866000

約数和(自身を除く): 21743651488

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 179, 272, 358, 716, 1432, 2864, 3043, 6086, 12172, 24344, 48688, 420149, 840298, 1680596, 3361192, 6722384, 7142533, 14285066, 28570132, 57140264, 75206671, 114280528, 150413342, 300826684, 601653368, 1203306736, 1278513407, 2557026814, 5114053628, 10228107256, 20456214512]

約数ペア:

[(1, 20456214512), (2, 10228107256), (4, 5114053628), (8, 2557026814), (16, 1278513407), (17, 1203306736), (34, 601653368), (68, 300826684), (136, 150413342), (179, 114280528), (272, 75206671), (358, 57140264), (716, 28570132), (1432, 14285066), (2864, 7142533), (3043, 6722384), (6086, 3361192), (12172, 1680596), (24344, 840298), (48688, 420149)]