991475680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{991}}^1$

素因数の和:1069

約数の個数: 144

約数和(自身を含む): 2607583104

約数和(自身を除く): 1616107424

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 37, 40, 52, 65, 74, 80, 104, 130, 148, 160, 169, 185, 208, 260, 296, 338, 370, 416, 481, 520, 592, 676, 740, 845, 962, 991, 1040, 1184, 1352, 1480, 1690, 1924, 1982, 2080, 2405, 2704, 2960, 3380, 3848, 3964, 4810, 4955, 5408, 5920, 6253, 6760, 7696, 7928, 9620, 9910, 12506, 12883, 13520, 15392, 15856, 19240, 19820, 25012, 25766, 27040, 31265, 31712, 36667, 38480, 39640, 50024, 51532, 62530, 64415, 73334, 76960, 79280, 100048, 103064, 125060, 128830, 146668, 158560, 167479, 183335, 200096, 206128, 250120, 257660, 293336, 334958, 366670, 412256, 476671, 500240, 515320, 586672, 669916, 733340, 837395, 953342, 1000480, 1030640, 1173344, 1339832, 1466680, 1674790, 1906684, 2061280, 2383355, 2679664, 2933360, 3349580, 3813368, 4766710, 5359328, 5866720, 6196723, 6699160, 7626736, 9533420, 12393446, 13398320, 15253472, 19066840, 24786892, 26796640, 30983615, 38133680, 49573784, 61967230, 76267360, 99147568, 123934460, 198295136, 247868920, 495737840, 991475680]

約数ペア:

[(1, 991475680), (2, 495737840), (4, 247868920), (5, 198295136), (8, 123934460), (10, 99147568), (13, 76267360), (16, 61967230), (20, 49573784), (26, 38133680), (32, 30983615), (37, 26796640), (40, 24786892), (52, 19066840), (65, 15253472), (74, 13398320), (80, 12393446), (104, 9533420), (130, 7626736), (148, 6699160), (160, 6196723), (169, 5866720), (185, 5359328), (208, 4766710), (260, 3813368), (296, 3349580), (338, 2933360), (370, 2679664), (416, 2383355), (481, 2061280), (520, 1906684), (592, 1674790), (676, 1466680), (740, 1339832), (845, 1173344), (962, 1030640), (991, 1000480), (1040, 953342), (1184, 837395), (1352, 733340), (1480, 669916), (1690, 586672), (1924, 515320), (1982, 500240), (2080, 476671), (2405, 412256), (2704, 366670), (2960, 334958), (3380, 293336), (3848, 257660), (3964, 250120), (4810, 206128), (4955, 200096), (5408, 183335), (5920, 167479), (6253, 158560), (6760, 146668), (7696, 128830), (7928, 125060), (9620, 103064), (9910, 100048), (12506, 79280), (12883, 76960), (13520, 73334), (15392, 64415), (15856, 62530), (19240, 51532), (19820, 50024), (25012, 39640), (25766, 38480), (27040, 36667), (31265, 31712)]