79856480

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{157}}^1$

素因数の和:217

約数の個数: 144

約数和(自身を含む): 220023216

約数和(自身を除く): 140166736

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 157, 160, 170, 176, 187, 220, 272, 289, 314, 340, 352, 374, 440, 544, 578, 628, 680, 748, 785, 880, 935, 1156, 1256, 1360, 1445, 1496, 1570, 1727, 1760, 1870, 2312, 2512, 2669, 2720, 2890, 2992, 3140, 3179, 3454, 3740, 4624, 5024, 5338, 5780, 5984, 6280, 6358, 6908, 7480, 8635, 9248, 10676, 11560, 12560, 12716, 13345, 13816, 14960, 15895, 17270, 21352, 23120, 25120, 25432, 26690, 27632, 29359, 29920, 31790, 34540, 42704, 45373, 46240, 50864, 53380, 55264, 58718, 63580, 69080, 85408, 90746, 101728, 106760, 117436, 127160, 138160, 146795, 181492, 213520, 226865, 234872, 254320, 276320, 293590, 362984, 427040, 453730, 469744, 499103, 508640, 587180, 725968, 907460, 939488, 998206, 1174360, 1451936, 1814920, 1996412, 2348720, 2495515, 3629840, 3992824, 4697440, 4991030, 7259680, 7985648, 9982060, 15971296, 19964120, 39928240, 79856480]

約数ペア:

[(1, 79856480), (2, 39928240), (4, 19964120), (5, 15971296), (8, 9982060), (10, 7985648), (11, 7259680), (16, 4991030), (17, 4697440), (20, 3992824), (22, 3629840), (32, 2495515), (34, 2348720), (40, 1996412), (44, 1814920), (55, 1451936), (68, 1174360), (80, 998206), (85, 939488), (88, 907460), (110, 725968), (136, 587180), (157, 508640), (160, 499103), (170, 469744), (176, 453730), (187, 427040), (220, 362984), (272, 293590), (289, 276320), (314, 254320), (340, 234872), (352, 226865), (374, 213520), (440, 181492), (544, 146795), (578, 138160), (628, 127160), (680, 117436), (748, 106760), (785, 101728), (880, 90746), (935, 85408), (1156, 69080), (1256, 63580), (1360, 58718), (1445, 55264), (1496, 53380), (1570, 50864), (1727, 46240), (1760, 45373), (1870, 42704), (2312, 34540), (2512, 31790), (2669, 29920), (2720, 29359), (2890, 27632), (2992, 26690), (3140, 25432), (3179, 25120), (3454, 23120), (3740, 21352), (4624, 17270), (5024, 15895), (5338, 14960), (5780, 13816), (5984, 13345), (6280, 12716), (6358, 12560), (6908, 11560), (7480, 10676), (8635, 9248)]