19909440

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:277

約数の個数: 168

約数和(自身を含む): 71006208

約数和(自身を除く): 51096768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 64, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 192, 223, 240, 248, 279, 288, 310, 320, 360, 372, 446, 465, 480, 496, 558, 576, 620, 669, 720, 744, 892, 930, 960, 992, 1115, 1116, 1240, 1338, 1395, 1440, 1488, 1784, 1860, 1984, 2007, 2230, 2232, 2480, 2676, 2790, 2880, 2976, 3345, 3568, 3720, 4014, 4460, 4464, 4960, 5352, 5580, 5952, 6690, 6913, 7136, 7440, 8028, 8920, 8928, 9920, 10035, 10704, 11160, 13380, 13826, 14272, 14880, 16056, 17840, 17856, 20070, 20739, 21408, 22320, 26760, 27652, 29760, 32112, 34565, 35680, 40140, 41478, 42816, 44640, 53520, 55304, 62217, 64224, 69130, 71360, 80280, 82956, 89280, 103695, 107040, 110608, 124434, 128448, 138260, 160560, 165912, 207390, 214080, 221216, 248868, 276520, 311085, 321120, 331824, 414780, 442432, 497736, 553040, 622170, 642240, 663648, 829560, 995472, 1106080, 1244340, 1327296, 1659120, 1990944, 2212160, 2488680, 3318240, 3981888, 4977360, 6636480, 9954720, 19909440]

約数ペア:

[(1, 19909440), (2, 9954720), (3, 6636480), (4, 4977360), (5, 3981888), (6, 3318240), (8, 2488680), (9, 2212160), (10, 1990944), (12, 1659120), (15, 1327296), (16, 1244340), (18, 1106080), (20, 995472), (24, 829560), (30, 663648), (31, 642240), (32, 622170), (36, 553040), (40, 497736), (45, 442432), (48, 414780), (60, 331824), (62, 321120), (64, 311085), (72, 276520), (80, 248868), (90, 221216), (93, 214080), (96, 207390), (120, 165912), (124, 160560), (144, 138260), (155, 128448), (160, 124434), (180, 110608), (186, 107040), (192, 103695), (223, 89280), (240, 82956), (248, 80280), (279, 71360), (288, 69130), (310, 64224), (320, 62217), (360, 55304), (372, 53520), (446, 44640), (465, 42816), (480, 41478), (496, 40140), (558, 35680), (576, 34565), (620, 32112), (669, 29760), (720, 27652), (744, 26760), (892, 22320), (930, 21408), (960, 20739), (992, 20070), (1115, 17856), (1116, 17840), (1240, 16056), (1338, 14880), (1395, 14272), (1440, 13826), (1488, 13380), (1784, 11160), (1860, 10704), (1984, 10035), (2007, 9920), (2230, 8928), (2232, 8920), (2480, 8028), (2676, 7440), (2790, 7136), (2880, 6913), (2976, 6690), (3345, 5952), (3568, 5580), (3720, 5352), (4014, 4960), (4460, 4464)]