71878040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 189423360

約数和(自身を除く): 117545320

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 47, 52, 65, 68, 85, 94, 104, 130, 136, 170, 173, 188, 221, 235, 260, 340, 346, 376, 442, 470, 520, 611, 680, 692, 799, 865, 884, 940, 1105, 1222, 1384, 1598, 1730, 1768, 1880, 2210, 2249, 2444, 2941, 3055, 3196, 3460, 3995, 4420, 4498, 4888, 5882, 6110, 6392, 6920, 7990, 8131, 8840, 8996, 10387, 11245, 11764, 12220, 14705, 15980, 16262, 17992, 20774, 22490, 23528, 24440, 29410, 31960, 32524, 38233, 40655, 41548, 44980, 51935, 58820, 65048, 76466, 81310, 83096, 89960, 103870, 105703, 117640, 138227, 152932, 162620, 191165, 207740, 211406, 276454, 305864, 325240, 382330, 415480, 422812, 528515, 552908, 691135, 764660, 845624, 1057030, 1105816, 1382270, 1529320, 1796951, 2114060, 2764540, 3593902, 4228120, 5529080, 7187804, 8984755, 14375608, 17969510, 35939020, 71878040]

約数ペア:

[(1, 71878040), (2, 35939020), (4, 17969510), (5, 14375608), (8, 8984755), (10, 7187804), (13, 5529080), (17, 4228120), (20, 3593902), (26, 2764540), (34, 2114060), (40, 1796951), (47, 1529320), (52, 1382270), (65, 1105816), (68, 1057030), (85, 845624), (94, 764660), (104, 691135), (130, 552908), (136, 528515), (170, 422812), (173, 415480), (188, 382330), (221, 325240), (235, 305864), (260, 276454), (340, 211406), (346, 207740), (376, 191165), (442, 162620), (470, 152932), (520, 138227), (611, 117640), (680, 105703), (692, 103870), (799, 89960), (865, 83096), (884, 81310), (940, 76466), (1105, 65048), (1222, 58820), (1384, 51935), (1598, 44980), (1730, 41548), (1768, 40655), (1880, 38233), (2210, 32524), (2249, 31960), (2444, 29410), (2941, 24440), (3055, 23528), (3196, 22490), (3460, 20774), (3995, 17992), (4420, 16262), (4498, 15980), (4888, 14705), (5882, 12220), (6110, 11764), (6392, 11245), (6920, 10387), (7990, 8996), (8131, 8840)]