28581640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 68636160

約数和(自身を除く): 40054520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 47, 92, 94, 115, 184, 188, 230, 235, 376, 460, 470, 661, 920, 940, 1081, 1322, 1880, 2162, 2644, 3305, 4324, 5288, 5405, 6610, 8648, 10810, 13220, 15203, 21620, 26440, 30406, 31067, 43240, 60812, 62134, 76015, 121624, 124268, 152030, 155335, 248536, 304060, 310670, 608120, 621340, 714541, 1242680, 1429082, 2858164, 3572705, 5716328, 7145410, 14290820, 28581640]

約数ペア:

[(1, 28581640), (2, 14290820), (4, 7145410), (5, 5716328), (8, 3572705), (10, 2858164), (20, 1429082), (23, 1242680), (40, 714541), (46, 621340), (47, 608120), (92, 310670), (94, 304060), (115, 248536), (184, 155335), (188, 152030), (230, 124268), (235, 121624), (376, 76015), (460, 62134), (470, 60812), (661, 43240), (920, 31067), (940, 30406), (1081, 26440), (1322, 21620), (1880, 15203), (2162, 13220), (2644, 10810), (3305, 8648), (4324, 6610), (5288, 5405)]