20147685915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{233}}^1\times {\mathrm{251}}^1$

素因数の和:709

約数の個数: 128

約数和(自身を含む): 39535921152

約数和(自身を除く): 19388235237

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 193, 233, 251, 255, 357, 579, 595, 699, 753, 965, 1165, 1255, 1351, 1631, 1757, 1785, 2895, 3281, 3495, 3765, 3961, 4053, 4267, 4893, 5271, 6755, 8155, 8785, 9843, 11883, 12801, 16405, 19805, 20265, 21335, 22967, 24465, 26355, 27727, 29869, 44969, 48443, 49215, 58483, 59415, 64005, 68901, 83181, 89607, 114835, 134907, 138635, 145329, 149345, 175449, 224845, 242215, 292415, 314783, 339101, 344505, 409381, 415905, 448035, 674535, 726645, 764473, 823531, 877245, 944349, 994211, 1017303, 1228143, 1573915, 1695505, 2046905, 2293419, 2470593, 2982633, 3822365, 4117655, 4721745, 4971055, 5086515, 5351311, 5764717, 6140715, 6959477, 11287219, 11467095, 12352965, 14913165, 16053933, 17294151, 20878431, 26756555, 28823585, 33861657, 34797385, 56436095, 79010533, 80269665, 86470755, 104392155, 169308285, 191882723, 237031599, 395052665, 575648169, 959413615, 1185157995, 1343179061, 2878240845, 4029537183, 6715895305, 20147685915]

約数ペア:

[(1, 20147685915), (3, 6715895305), (5, 4029537183), (7, 2878240845), (15, 1343179061), (17, 1185157995), (21, 959413615), (35, 575648169), (51, 395052665), (85, 237031599), (105, 191882723), (119, 169308285), (193, 104392155), (233, 86470755), (251, 80269665), (255, 79010533), (357, 56436095), (579, 34797385), (595, 33861657), (699, 28823585), (753, 26756555), (965, 20878431), (1165, 17294151), (1255, 16053933), (1351, 14913165), (1631, 12352965), (1757, 11467095), (1785, 11287219), (2895, 6959477), (3281, 6140715), (3495, 5764717), (3765, 5351311), (3961, 5086515), (4053, 4971055), (4267, 4721745), (4893, 4117655), (5271, 3822365), (6755, 2982633), (8155, 2470593), (8785, 2293419), (9843, 2046905), (11883, 1695505), (12801, 1573915), (16405, 1228143), (19805, 1017303), (20265, 994211), (21335, 944349), (22967, 877245), (24465, 823531), (26355, 764473), (27727, 726645), (29869, 674535), (44969, 448035), (48443, 415905), (49215, 409381), (58483, 344505), (59415, 339101), (64005, 314783), (68901, 292415), (83181, 242215), (89607, 224845), (114835, 175449), (134907, 149345), (138635, 145329)]