205298680

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{541}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 474141600

約数和(自身を除く): 268842920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 179, 212, 265, 358, 424, 530, 541, 716, 895, 1060, 1082, 1432, 1790, 2120, 2164, 2705, 3580, 4328, 5410, 7160, 9487, 10820, 18974, 21640, 28673, 37948, 47435, 57346, 75896, 94870, 96839, 114692, 143365, 189740, 193678, 229384, 286730, 379480, 387356, 484195, 573460, 774712, 968390, 1146920, 1936780, 3873560, 5132467, 10264934, 20529868, 25662335, 41059736, 51324670, 102649340, 205298680]

約数ペア:

[(1, 205298680), (2, 102649340), (4, 51324670), (5, 41059736), (8, 25662335), (10, 20529868), (20, 10264934), (40, 5132467), (53, 3873560), (106, 1936780), (179, 1146920), (212, 968390), (265, 774712), (358, 573460), (424, 484195), (530, 387356), (541, 379480), (716, 286730), (895, 229384), (1060, 193678), (1082, 189740), (1432, 143365), (1790, 114692), (2120, 96839), (2164, 94870), (2705, 75896), (3580, 57346), (4328, 47435), (5410, 37948), (7160, 28673), (9487, 21640), (10820, 18974)]