656348240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{20983}}^1$

素因数の和:21036

約数の個数: 80

約数和(自身を含む): 1686106368

約数和(自身を除く): 1029758128

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 680, 782, 920, 1360, 1564, 1840, 1955, 3128, 3910, 6256, 7820, 15640, 20983, 31280, 41966, 83932, 104915, 167864, 209830, 335728, 356711, 419660, 482609, 713422, 839320, 965218, 1426844, 1678640, 1783555, 1930436, 2413045, 2853688, 3567110, 3860872, 4826090, 5707376, 7134220, 7721744, 8204353, 9652180, 14268440, 16408706, 19304360, 28536880, 32817412, 38608720, 41021765, 65634824, 82043530, 131269648, 164087060, 328174120, 656348240]

約数ペア:

[(1, 656348240), (2, 328174120), (4, 164087060), (5, 131269648), (8, 82043530), (10, 65634824), (16, 41021765), (17, 38608720), (20, 32817412), (23, 28536880), (34, 19304360), (40, 16408706), (46, 14268440), (68, 9652180), (80, 8204353), (85, 7721744), (92, 7134220), (115, 5707376), (136, 4826090), (170, 3860872), (184, 3567110), (230, 2853688), (272, 2413045), (340, 1930436), (368, 1783555), (391, 1678640), (460, 1426844), (680, 965218), (782, 839320), (920, 713422), (1360, 482609), (1564, 419660), (1840, 356711), (1955, 335728), (3128, 209830), (3910, 167864), (6256, 104915), (7820, 83932), (15640, 41966), (20983, 31280)]