21739680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:539

約数の個数: 144

約数和(自身を含む): 76737024

約数和(自身を除く): 54997344

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, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 240, 248, 279, 288, 310, 360, 372, 465, 480, 487, 496, 558, 620, 720, 744, 930, 974, 992, 1116, 1240, 1395, 1440, 1461, 1488, 1860, 1948, 2232, 2435, 2480, 2790, 2922, 2976, 3720, 3896, 4383, 4464, 4870, 4960, 5580, 5844, 7305, 7440, 7792, 8766, 8928, 9740, 11160, 11688, 14610, 14880, 15097, 15584, 17532, 19480, 21915, 22320, 23376, 29220, 30194, 35064, 38960, 43830, 44640, 45291, 46752, 58440, 60388, 70128, 75485, 77920, 87660, 90582, 116880, 120776, 135873, 140256, 150970, 175320, 181164, 226455, 233760, 241552, 271746, 301940, 350640, 362328, 452910, 483104, 543492, 603880, 679365, 701280, 724656, 905820, 1086984, 1207760, 1358730, 1449312, 1811640, 2173968, 2415520, 2717460, 3623280, 4347936, 5434920, 7246560, 10869840, 21739680]

約数ペア:

[(1, 21739680), (2, 10869840), (3, 7246560), (4, 5434920), (5, 4347936), (6, 3623280), (8, 2717460), (9, 2415520), (10, 2173968), (12, 1811640), (15, 1449312), (16, 1358730), (18, 1207760), (20, 1086984), (24, 905820), (30, 724656), (31, 701280), (32, 679365), (36, 603880), (40, 543492), (45, 483104), (48, 452910), (60, 362328), (62, 350640), (72, 301940), (80, 271746), (90, 241552), (93, 233760), (96, 226455), (120, 181164), (124, 175320), (144, 150970), (155, 140256), (160, 135873), (180, 120776), (186, 116880), (240, 90582), (248, 87660), (279, 77920), (288, 75485), (310, 70128), (360, 60388), (372, 58440), (465, 46752), (480, 45291), (487, 44640), (496, 43830), (558, 38960), (620, 35064), (720, 30194), (744, 29220), (930, 23376), (974, 22320), (992, 21915), (1116, 19480), (1240, 17532), (1395, 15584), (1440, 15097), (1461, 14880), (1488, 14610), (1860, 11688), (1948, 11160), (2232, 9740), (2435, 8928), (2480, 8766), (2790, 7792), (2922, 7440), (2976, 7305), (3720, 5844), (3896, 5580), (4383, 4960), (4464, 4870)]