178779720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{643}}^1$

素因数の和:995

約数の個数: 128

約数和(自身を含む): 615767040

約数和(自身を除く): 436987320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 331, 420, 643, 662, 840, 993, 1286, 1324, 1655, 1929, 1986, 2317, 2572, 2648, 3215, 3310, 3858, 3972, 4501, 4634, 4965, 5144, 6430, 6620, 6951, 7716, 7944, 9002, 9268, 9645, 9930, 11585, 12860, 13240, 13503, 13902, 15432, 18004, 18536, 19290, 19860, 22505, 23170, 25720, 27006, 27804, 34755, 36008, 38580, 39720, 45010, 46340, 54012, 55608, 67515, 69510, 77160, 90020, 92680, 108024, 135030, 139020, 180040, 212833, 270060, 278040, 425666, 540120, 638499, 851332, 1064165, 1276998, 1489831, 1702664, 2128330, 2553996, 2979662, 3192495, 4256660, 4469493, 5107992, 5959324, 6384990, 7449155, 8513320, 8938986, 11918648, 12769980, 14898310, 17877972, 22347465, 25539960, 29796620, 35755944, 44694930, 59593240, 89389860, 178779720]

約数ペア:

[(1, 178779720), (2, 89389860), (3, 59593240), (4, 44694930), (5, 35755944), (6, 29796620), (7, 25539960), (8, 22347465), (10, 17877972), (12, 14898310), (14, 12769980), (15, 11918648), (20, 8938986), (21, 8513320), (24, 7449155), (28, 6384990), (30, 5959324), (35, 5107992), (40, 4469493), (42, 4256660), (56, 3192495), (60, 2979662), (70, 2553996), (84, 2128330), (105, 1702664), (120, 1489831), (140, 1276998), (168, 1064165), (210, 851332), (280, 638499), (331, 540120), (420, 425666), (643, 278040), (662, 270060), (840, 212833), (993, 180040), (1286, 139020), (1324, 135030), (1655, 108024), (1929, 92680), (1986, 90020), (2317, 77160), (2572, 69510), (2648, 67515), (3215, 55608), (3310, 54012), (3858, 46340), (3972, 45010), (4501, 39720), (4634, 38580), (4965, 36008), (5144, 34755), (6430, 27804), (6620, 27006), (6951, 25720), (7716, 23170), (7944, 22505), (9002, 19860), (9268, 19290), (9645, 18536), (9930, 18004), (11585, 15432), (12860, 13902), (13240, 13503)]