20217867880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{10909}}^1\times {\mathrm{6619}}^1$

素因数の和:17546

約数の個数: 64

約数和(自身を含む): 52001424000

約数和(自身を除く): 31783556120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 6619, 10909, 13238, 21818, 26476, 33095, 43636, 46333, 52952, 54545, 66190, 76363, 87272, 92666, 109090, 132380, 152726, 185332, 218180, 231665, 264760, 305452, 370664, 381815, 436360, 463330, 610904, 763630, 926660, 1527260, 1853320, 3054520, 72206671, 144413342, 288826684, 361033355, 505446697, 577653368, 722066710, 1010893394, 1444133420, 2021786788, 2527233485, 2888266840, 4043573576, 5054466970, 10108933940, 20217867880]

約数ペア:

[(1, 20217867880), (2, 10108933940), (4, 5054466970), (5, 4043573576), (7, 2888266840), (8, 2527233485), (10, 2021786788), (14, 1444133420), (20, 1010893394), (28, 722066710), (35, 577653368), (40, 505446697), (56, 361033355), (70, 288826684), (140, 144413342), (280, 72206671), (6619, 3054520), (10909, 1853320), (13238, 1527260), (21818, 926660), (26476, 763630), (33095, 610904), (43636, 463330), (46333, 436360), (52952, 381815), (54545, 370664), (66190, 305452), (76363, 264760), (87272, 231665), (92666, 218180), (109090, 185332), (132380, 152726)]