21113640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{263}}^1$

素因数の和:503

約数の個数: 96

約数和(自身を含む): 69189120

約数和(自身を除く): 48075480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 223, 263, 360, 446, 526, 669, 789, 892, 1052, 1115, 1315, 1338, 1578, 1784, 2007, 2104, 2230, 2367, 2630, 2676, 3156, 3345, 3945, 4014, 4460, 4734, 5260, 5352, 6312, 6690, 7890, 8028, 8920, 9468, 10035, 10520, 11835, 13380, 15780, 16056, 18936, 20070, 23670, 26760, 31560, 40140, 47340, 58649, 80280, 94680, 117298, 175947, 234596, 293245, 351894, 469192, 527841, 586490, 703788, 879735, 1055682, 1172980, 1407576, 1759470, 2111364, 2345960, 2639205, 3518940, 4222728, 5278410, 7037880, 10556820, 21113640]

約数ペア:

[(1, 21113640), (2, 10556820), (3, 7037880), (4, 5278410), (5, 4222728), (6, 3518940), (8, 2639205), (9, 2345960), (10, 2111364), (12, 1759470), (15, 1407576), (18, 1172980), (20, 1055682), (24, 879735), (30, 703788), (36, 586490), (40, 527841), (45, 469192), (60, 351894), (72, 293245), (90, 234596), (120, 175947), (180, 117298), (223, 94680), (263, 80280), (360, 58649), (446, 47340), (526, 40140), (669, 31560), (789, 26760), (892, 23670), (1052, 20070), (1115, 18936), (1315, 16056), (1338, 15780), (1578, 13380), (1784, 11835), (2007, 10520), (2104, 10035), (2230, 9468), (2367, 8920), (2630, 8028), (2676, 7890), (3156, 6690), (3345, 6312), (3945, 5352), (4014, 5260), (4460, 4734)]