21918120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{269}}^1$

素因数の和:387

約数の個数: 128

約数和(自身を含む): 76204800

約数和(自身を除く): 54286680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 97, 105, 120, 140, 168, 194, 210, 269, 280, 291, 388, 420, 485, 538, 582, 679, 776, 807, 840, 970, 1076, 1164, 1345, 1358, 1455, 1614, 1883, 1940, 2037, 2152, 2328, 2690, 2716, 2910, 3228, 3395, 3766, 3880, 4035, 4074, 5380, 5432, 5649, 5820, 6456, 6790, 7532, 8070, 8148, 9415, 10185, 10760, 11298, 11640, 13580, 15064, 16140, 16296, 18830, 20370, 22596, 26093, 27160, 28245, 32280, 37660, 40740, 45192, 52186, 56490, 75320, 78279, 81480, 104372, 112980, 130465, 156558, 182651, 208744, 225960, 260930, 313116, 365302, 391395, 521860, 547953, 626232, 730604, 782790, 913255, 1043720, 1095906, 1461208, 1565580, 1826510, 2191812, 2739765, 3131160, 3653020, 4383624, 5479530, 7306040, 10959060, 21918120]

約数ペア:

[(1, 21918120), (2, 10959060), (3, 7306040), (4, 5479530), (5, 4383624), (6, 3653020), (7, 3131160), (8, 2739765), (10, 2191812), (12, 1826510), (14, 1565580), (15, 1461208), (20, 1095906), (21, 1043720), (24, 913255), (28, 782790), (30, 730604), (35, 626232), (40, 547953), (42, 521860), (56, 391395), (60, 365302), (70, 313116), (84, 260930), (97, 225960), (105, 208744), (120, 182651), (140, 156558), (168, 130465), (194, 112980), (210, 104372), (269, 81480), (280, 78279), (291, 75320), (388, 56490), (420, 52186), (485, 45192), (538, 40740), (582, 37660), (679, 32280), (776, 28245), (807, 27160), (840, 26093), (970, 22596), (1076, 20370), (1164, 18830), (1345, 16296), (1358, 16140), (1455, 15064), (1614, 13580), (1883, 11640), (1940, 11298), (2037, 10760), (2152, 10185), (2328, 9415), (2690, 8148), (2716, 8070), (2910, 7532), (3228, 6790), (3395, 6456), (3766, 5820), (3880, 5649), (4035, 5432), (4074, 5380)]