28252640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1$

素因数の和:109

約数の個数: 144

約数和(自身を含む): 77982912

約数和(自身を除く): 49730272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 47, 52, 65, 68, 80, 85, 94, 104, 130, 136, 160, 170, 188, 208, 221, 235, 260, 272, 289, 340, 376, 416, 442, 470, 520, 544, 578, 611, 680, 752, 799, 884, 940, 1040, 1105, 1156, 1222, 1360, 1445, 1504, 1598, 1768, 1880, 2080, 2210, 2312, 2444, 2720, 2890, 3055, 3196, 3536, 3757, 3760, 3995, 4420, 4624, 4888, 5780, 6110, 6392, 7072, 7514, 7520, 7990, 8840, 9248, 9776, 10387, 11560, 12220, 12784, 13583, 15028, 15980, 17680, 18785, 19552, 20774, 23120, 24440, 25568, 27166, 30056, 31960, 35360, 37570, 41548, 46240, 48880, 51935, 54332, 60112, 63920, 67915, 75140, 83096, 97760, 103870, 108664, 120224, 127840, 135830, 150280, 166192, 176579, 207740, 217328, 271660, 300560, 332384, 353158, 415480, 434656, 543320, 601120, 706316, 830960, 882895, 1086640, 1412632, 1661920, 1765790, 2173280, 2825264, 3531580, 5650528, 7063160, 14126320, 28252640]

約数ペア:

[(1, 28252640), (2, 14126320), (4, 7063160), (5, 5650528), (8, 3531580), (10, 2825264), (13, 2173280), (16, 1765790), (17, 1661920), (20, 1412632), (26, 1086640), (32, 882895), (34, 830960), (40, 706316), (47, 601120), (52, 543320), (65, 434656), (68, 415480), (80, 353158), (85, 332384), (94, 300560), (104, 271660), (130, 217328), (136, 207740), (160, 176579), (170, 166192), (188, 150280), (208, 135830), (221, 127840), (235, 120224), (260, 108664), (272, 103870), (289, 97760), (340, 83096), (376, 75140), (416, 67915), (442, 63920), (470, 60112), (520, 54332), (544, 51935), (578, 48880), (611, 46240), (680, 41548), (752, 37570), (799, 35360), (884, 31960), (940, 30056), (1040, 27166), (1105, 25568), (1156, 24440), (1222, 23120), (1360, 20774), (1445, 19552), (1504, 18785), (1598, 17680), (1768, 15980), (1880, 15028), (2080, 13583), (2210, 12784), (2312, 12220), (2444, 11560), (2720, 10387), (2890, 9776), (3055, 9248), (3196, 8840), (3536, 7990), (3757, 7520), (3760, 7514), (3995, 7072), (4420, 6392), (4624, 6110), (4888, 5780)]