20927816

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:151

約数の個数: 128

約数和(自身を含む): 54432000

約数和(自身を除く): 33504184

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 19, 26, 28, 34, 38, 52, 56, 68, 76, 89, 91, 104, 119, 133, 136, 152, 178, 182, 221, 238, 247, 266, 323, 356, 364, 442, 476, 494, 532, 623, 646, 712, 728, 884, 952, 988, 1064, 1157, 1246, 1292, 1513, 1547, 1691, 1729, 1768, 1976, 2261, 2314, 2492, 2584, 3026, 3094, 3382, 3458, 4199, 4522, 4628, 4984, 6052, 6188, 6764, 6916, 8099, 8398, 9044, 9256, 10591, 11837, 12104, 12376, 13528, 13832, 16198, 16796, 18088, 19669, 21182, 21983, 23674, 28747, 29393, 32396, 33592, 39338, 42364, 43966, 47348, 57494, 58786, 64792, 78676, 84728, 87932, 94696, 114988, 117572, 137683, 153881, 157352, 175864, 201229, 229976, 235144, 275366, 307762, 373711, 402458, 550732, 615524, 747422, 804916, 1101464, 1231048, 1494844, 1609832, 2615977, 2989688, 5231954, 10463908, 20927816]

約数ペア:

[(1, 20927816), (2, 10463908), (4, 5231954), (7, 2989688), (8, 2615977), (13, 1609832), (14, 1494844), (17, 1231048), (19, 1101464), (26, 804916), (28, 747422), (34, 615524), (38, 550732), (52, 402458), (56, 373711), (68, 307762), (76, 275366), (89, 235144), (91, 229976), (104, 201229), (119, 175864), (133, 157352), (136, 153881), (152, 137683), (178, 117572), (182, 114988), (221, 94696), (238, 87932), (247, 84728), (266, 78676), (323, 64792), (356, 58786), (364, 57494), (442, 47348), (476, 43966), (494, 42364), (532, 39338), (623, 33592), (646, 32396), (712, 29393), (728, 28747), (884, 23674), (952, 21983), (988, 21182), (1064, 19669), (1157, 18088), (1246, 16796), (1292, 16198), (1513, 13832), (1547, 13528), (1691, 12376), (1729, 12104), (1768, 11837), (1976, 10591), (2261, 9256), (2314, 9044), (2492, 8398), (2584, 8099), (3026, 6916), (3094, 6764), (3382, 6188), (3458, 6052), (4199, 4984), (4522, 4628)]