131579320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:277

約数の個数: 128

約数和(自身を含む): 335923200

約数和(自身を除く): 204343880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 47, 68, 85, 92, 94, 115, 136, 170, 179, 184, 188, 230, 235, 340, 358, 376, 391, 460, 470, 680, 716, 782, 799, 895, 920, 940, 1081, 1432, 1564, 1598, 1790, 1880, 1955, 2162, 3043, 3128, 3196, 3580, 3910, 3995, 4117, 4324, 5405, 6086, 6392, 7160, 7820, 7990, 8234, 8413, 8648, 10810, 12172, 15215, 15640, 15980, 16468, 16826, 18377, 20585, 21620, 24344, 30430, 31960, 32936, 33652, 36754, 41170, 42065, 43240, 60860, 67304, 69989, 73508, 82340, 84130, 91885, 121720, 139978, 143021, 147016, 164680, 168260, 183770, 193499, 279956, 286042, 336520, 349945, 367540, 386998, 559912, 572084, 699890, 715105, 735080, 773996, 967495, 1144168, 1399780, 1430210, 1547992, 1934990, 2799560, 2860420, 3289483, 3869980, 5720840, 6578966, 7739960, 13157932, 16447415, 26315864, 32894830, 65789660, 131579320]

約数ペア:

[(1, 131579320), (2, 65789660), (4, 32894830), (5, 26315864), (8, 16447415), (10, 13157932), (17, 7739960), (20, 6578966), (23, 5720840), (34, 3869980), (40, 3289483), (46, 2860420), (47, 2799560), (68, 1934990), (85, 1547992), (92, 1430210), (94, 1399780), (115, 1144168), (136, 967495), (170, 773996), (179, 735080), (184, 715105), (188, 699890), (230, 572084), (235, 559912), (340, 386998), (358, 367540), (376, 349945), (391, 336520), (460, 286042), (470, 279956), (680, 193499), (716, 183770), (782, 168260), (799, 164680), (895, 147016), (920, 143021), (940, 139978), (1081, 121720), (1432, 91885), (1564, 84130), (1598, 82340), (1790, 73508), (1880, 69989), (1955, 67304), (2162, 60860), (3043, 43240), (3128, 42065), (3196, 41170), (3580, 36754), (3910, 33652), (3995, 32936), (4117, 31960), (4324, 30430), (5405, 24344), (6086, 21620), (6392, 20585), (7160, 18377), (7820, 16826), (7990, 16468), (8234, 15980), (8413, 15640), (8648, 15215), (10810, 12172)]