20546680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{953}}^1$

素因数の和:989

約数の個数: 96

約数和(自身を含む): 58728240

約数和(自身を除く): 38181560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 616, 770, 953, 980, 1078, 1540, 1906, 1960, 2156, 2695, 3080, 3812, 4312, 4765, 5390, 6671, 7624, 9530, 10483, 10780, 13342, 19060, 20966, 21560, 26684, 33355, 38120, 41932, 46697, 52415, 53368, 66710, 73381, 83864, 93394, 104830, 133420, 146762, 186788, 209660, 233485, 266840, 293524, 366905, 373576, 419320, 466970, 513667, 587048, 733810, 933940, 1027334, 1467620, 1867880, 2054668, 2568335, 2935240, 4109336, 5136670, 10273340, 20546680]

約数ペア:

[(1, 20546680), (2, 10273340), (4, 5136670), (5, 4109336), (7, 2935240), (8, 2568335), (10, 2054668), (11, 1867880), (14, 1467620), (20, 1027334), (22, 933940), (28, 733810), (35, 587048), (40, 513667), (44, 466970), (49, 419320), (55, 373576), (56, 366905), (70, 293524), (77, 266840), (88, 233485), (98, 209660), (110, 186788), (140, 146762), (154, 133420), (196, 104830), (220, 93394), (245, 83864), (280, 73381), (308, 66710), (385, 53368), (392, 52415), (440, 46697), (490, 41932), (539, 38120), (616, 33355), (770, 26684), (953, 21560), (980, 20966), (1078, 19060), (1540, 13342), (1906, 10780), (1960, 10483), (2156, 9530), (2695, 7624), (3080, 6671), (3812, 5390), (4312, 4765)]