21576720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{743}}^1$

素因数の和:781

約数の個数: 120

約数和(自身を含む): 73620288

約数和(自身を除く): 52043568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 121, 132, 165, 176, 220, 240, 242, 264, 330, 363, 440, 484, 528, 605, 660, 726, 743, 880, 968, 1210, 1320, 1452, 1486, 1815, 1936, 2229, 2420, 2640, 2904, 2972, 3630, 3715, 4458, 4840, 5808, 5944, 7260, 7430, 8173, 8916, 9680, 11145, 11888, 14520, 14860, 16346, 17832, 22290, 24519, 29040, 29720, 32692, 35664, 40865, 44580, 49038, 59440, 65384, 81730, 89160, 89903, 98076, 122595, 130768, 163460, 178320, 179806, 196152, 245190, 269709, 326920, 359612, 392304, 449515, 490380, 539418, 653840, 719224, 899030, 980760, 1078836, 1348545, 1438448, 1798060, 1961520, 2157672, 2697090, 3596120, 4315344, 5394180, 7192240, 10788360, 21576720]

約数ペア:

[(1, 21576720), (2, 10788360), (3, 7192240), (4, 5394180), (5, 4315344), (6, 3596120), (8, 2697090), (10, 2157672), (11, 1961520), (12, 1798060), (15, 1438448), (16, 1348545), (20, 1078836), (22, 980760), (24, 899030), (30, 719224), (33, 653840), (40, 539418), (44, 490380), (48, 449515), (55, 392304), (60, 359612), (66, 326920), (80, 269709), (88, 245190), (110, 196152), (120, 179806), (121, 178320), (132, 163460), (165, 130768), (176, 122595), (220, 98076), (240, 89903), (242, 89160), (264, 81730), (330, 65384), (363, 59440), (440, 49038), (484, 44580), (528, 40865), (605, 35664), (660, 32692), (726, 29720), (743, 29040), (880, 24519), (968, 22290), (1210, 17832), (1320, 16346), (1452, 14860), (1486, 14520), (1815, 11888), (1936, 11145), (2229, 9680), (2420, 8916), (2640, 8173), (2904, 7430), (2972, 7260), (3630, 5944), (3715, 5808), (4458, 4840)]