81296720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{113}}^1$

素因数の和:189

約数の個数: 120

約数和(自身を含む): 211064616

約数和(自身を除く): 129767896

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 113, 115, 136, 170, 184, 226, 230, 272, 340, 368, 391, 452, 460, 529, 565, 680, 782, 904, 920, 1058, 1130, 1360, 1564, 1808, 1840, 1921, 1955, 2116, 2260, 2599, 2645, 3128, 3842, 3910, 4232, 4520, 5198, 5290, 6256, 7684, 7820, 8464, 8993, 9040, 9605, 10396, 10580, 12995, 15368, 15640, 17986, 19210, 20792, 21160, 25990, 30736, 31280, 35972, 38420, 41584, 42320, 44183, 44965, 51980, 59777, 71944, 76840, 88366, 89930, 103960, 119554, 143888, 153680, 176732, 179860, 207920, 220915, 239108, 298885, 353464, 359720, 441830, 478216, 597770, 706928, 719440, 883660, 956432, 1016209, 1195540, 1767320, 2032418, 2391080, 3534640, 4064836, 4782160, 5081045, 8129672, 10162090, 16259344, 20324180, 40648360, 81296720]

約数ペア:

[(1, 81296720), (2, 40648360), (4, 20324180), (5, 16259344), (8, 10162090), (10, 8129672), (16, 5081045), (17, 4782160), (20, 4064836), (23, 3534640), (34, 2391080), (40, 2032418), (46, 1767320), (68, 1195540), (80, 1016209), (85, 956432), (92, 883660), (113, 719440), (115, 706928), (136, 597770), (170, 478216), (184, 441830), (226, 359720), (230, 353464), (272, 298885), (340, 239108), (368, 220915), (391, 207920), (452, 179860), (460, 176732), (529, 153680), (565, 143888), (680, 119554), (782, 103960), (904, 89930), (920, 88366), (1058, 76840), (1130, 71944), (1360, 59777), (1564, 51980), (1808, 44965), (1840, 44183), (1921, 42320), (1955, 41584), (2116, 38420), (2260, 35972), (2599, 31280), (2645, 30736), (3128, 25990), (3842, 21160), (3910, 20792), (4232, 19210), (4520, 17986), (5198, 15640), (5290, 15368), (6256, 12995), (7684, 10580), (7820, 10396), (8464, 9605), (8993, 9040)]