15379720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 36403200

約数和(自身を除く): 21023480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 155, 157, 158, 248, 310, 314, 316, 395, 620, 628, 632, 785, 790, 1240, 1256, 1570, 1580, 2449, 3140, 3160, 4867, 4898, 6280, 9734, 9796, 12245, 12403, 19468, 19592, 24335, 24490, 24806, 38936, 48670, 48980, 49612, 62015, 97340, 97960, 99224, 124030, 194680, 248060, 384493, 496120, 768986, 1537972, 1922465, 3075944, 3844930, 7689860, 15379720]

約数ペア:

[(1, 15379720), (2, 7689860), (4, 3844930), (5, 3075944), (8, 1922465), (10, 1537972), (20, 768986), (31, 496120), (40, 384493), (62, 248060), (79, 194680), (124, 124030), (155, 99224), (157, 97960), (158, 97340), (248, 62015), (310, 49612), (314, 48980), (316, 48670), (395, 38936), (620, 24806), (628, 24490), (632, 24335), (785, 19592), (790, 19468), (1240, 12403), (1256, 12245), (1570, 9796), (1580, 9734), (2449, 6280), (3140, 4898), (3160, 4867)]