8001720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:290

約数の個数: 128

約数和(自身を含む): 27648000

約数和(自身を除く): 19646280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 90, 93, 108, 120, 124, 135, 155, 180, 186, 216, 239, 248, 270, 279, 310, 360, 372, 465, 478, 540, 558, 620, 717, 744, 837, 930, 956, 1080, 1116, 1195, 1240, 1395, 1434, 1674, 1860, 1912, 2151, 2232, 2390, 2790, 2868, 3348, 3585, 3720, 4185, 4302, 4780, 5580, 5736, 6453, 6696, 7170, 7409, 8370, 8604, 9560, 10755, 11160, 12906, 14340, 14818, 16740, 17208, 21510, 22227, 25812, 28680, 29636, 32265, 33480, 37045, 43020, 44454, 51624, 59272, 64530, 66681, 74090, 86040, 88908, 111135, 129060, 133362, 148180, 177816, 200043, 222270, 258120, 266724, 296360, 333405, 400086, 444540, 533448, 666810, 800172, 889080, 1000215, 1333620, 1600344, 2000430, 2667240, 4000860, 8001720]

約数ペア:

[(1, 8001720), (2, 4000860), (3, 2667240), (4, 2000430), (5, 1600344), (6, 1333620), (8, 1000215), (9, 889080), (10, 800172), (12, 666810), (15, 533448), (18, 444540), (20, 400086), (24, 333405), (27, 296360), (30, 266724), (31, 258120), (36, 222270), (40, 200043), (45, 177816), (54, 148180), (60, 133362), (62, 129060), (72, 111135), (90, 88908), (93, 86040), (108, 74090), (120, 66681), (124, 64530), (135, 59272), (155, 51624), (180, 44454), (186, 43020), (216, 37045), (239, 33480), (248, 32265), (270, 29636), (279, 28680), (310, 25812), (360, 22227), (372, 21510), (465, 17208), (478, 16740), (540, 14818), (558, 14340), (620, 12906), (717, 11160), (744, 10755), (837, 9560), (930, 8604), (956, 8370), (1080, 7409), (1116, 7170), (1195, 6696), (1240, 6453), (1395, 5736), (1434, 5580), (1674, 4780), (1860, 4302), (1912, 4185), (2151, 3720), (2232, 3585), (2390, 3348), (2790, 2868)]