21255520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{929}}^1$

素因数の和:968

約数の個数: 96

約数和(自身を含む): 59058720

約数和(自身を除く): 37803200

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 352, 416, 440, 520, 572, 715, 880, 929, 1040, 1144, 1430, 1760, 1858, 2080, 2288, 2860, 3716, 4576, 4645, 5720, 7432, 9290, 10219, 11440, 12077, 14864, 18580, 20438, 22880, 24154, 29728, 37160, 40876, 48308, 51095, 60385, 74320, 81752, 96616, 102190, 120770, 132847, 148640, 163504, 193232, 204380, 241540, 265694, 327008, 386464, 408760, 483080, 531388, 664235, 817520, 966160, 1062776, 1328470, 1635040, 1932320, 2125552, 2656940, 4251104, 5313880, 10627760, 21255520]

約数ペア:

[(1, 21255520), (2, 10627760), (4, 5313880), (5, 4251104), (8, 2656940), (10, 2125552), (11, 1932320), (13, 1635040), (16, 1328470), (20, 1062776), (22, 966160), (26, 817520), (32, 664235), (40, 531388), (44, 483080), (52, 408760), (55, 386464), (65, 327008), (80, 265694), (88, 241540), (104, 204380), (110, 193232), (130, 163504), (143, 148640), (160, 132847), (176, 120770), (208, 102190), (220, 96616), (260, 81752), (286, 74320), (352, 60385), (416, 51095), (440, 48308), (520, 40876), (572, 37160), (715, 29728), (880, 24154), (929, 22880), (1040, 20438), (1144, 18580), (1430, 14864), (1760, 12077), (1858, 11440), (2080, 10219), (2288, 9290), (2860, 7432), (3716, 5720), (4576, 4645)]