19663920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{881}}^1$

素因数の和:931

約数の個数: 120

約数和(自身を含む): 68245632

約数和(自身を除く): 48581712

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 881, 930, 1116, 1240, 1395, 1488, 1762, 1860, 2232, 2480, 2643, 2790, 3524, 3720, 4405, 4464, 5286, 5580, 7048, 7440, 7929, 8810, 10572, 11160, 13215, 14096, 15858, 17620, 21144, 22320, 26430, 27311, 31716, 35240, 39645, 42288, 52860, 54622, 63432, 70480, 79290, 81933, 105720, 109244, 126864, 136555, 158580, 163866, 211440, 218488, 245799, 273110, 317160, 327732, 409665, 436976, 491598, 546220, 634320, 655464, 819330, 983196, 1092440, 1228995, 1310928, 1638660, 1966392, 2184880, 2457990, 3277320, 3932784, 4915980, 6554640, 9831960, 19663920]

約数ペア:

[(1, 19663920), (2, 9831960), (3, 6554640), (4, 4915980), (5, 3932784), (6, 3277320), (8, 2457990), (9, 2184880), (10, 1966392), (12, 1638660), (15, 1310928), (16, 1228995), (18, 1092440), (20, 983196), (24, 819330), (30, 655464), (31, 634320), (36, 546220), (40, 491598), (45, 436976), (48, 409665), (60, 327732), (62, 317160), (72, 273110), (80, 245799), (90, 218488), (93, 211440), (120, 163866), (124, 158580), (144, 136555), (155, 126864), (180, 109244), (186, 105720), (240, 81933), (248, 79290), (279, 70480), (310, 63432), (360, 54622), (372, 52860), (465, 42288), (496, 39645), (558, 35240), (620, 31716), (720, 27311), (744, 26430), (881, 22320), (930, 21144), (1116, 17620), (1240, 15858), (1395, 14096), (1488, 13215), (1762, 11160), (1860, 10572), (2232, 8810), (2480, 7929), (2643, 7440), (2790, 7048), (3524, 5580), (3720, 5286), (4405, 4464)]