20746980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1459}}^1$

素因数の和:1553

約数の個数: 72

約数和(自身を含む): 63772800

約数和(自身を除く): 43025820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1422, 1459, 1580, 2370, 2844, 2918, 3555, 4377, 4740, 5836, 7110, 7295, 8754, 13131, 14220, 14590, 17508, 21885, 26262, 29180, 43770, 52524, 65655, 87540, 115261, 131310, 230522, 262620, 345783, 461044, 576305, 691566, 1037349, 1152610, 1383132, 1728915, 2074698, 2305220, 3457830, 4149396, 5186745, 6915660, 10373490, 20746980]

約数ペア:

[(1, 20746980), (2, 10373490), (3, 6915660), (4, 5186745), (5, 4149396), (6, 3457830), (9, 2305220), (10, 2074698), (12, 1728915), (15, 1383132), (18, 1152610), (20, 1037349), (30, 691566), (36, 576305), (45, 461044), (60, 345783), (79, 262620), (90, 230522), (158, 131310), (180, 115261), (237, 87540), (316, 65655), (395, 52524), (474, 43770), (711, 29180), (790, 26262), (948, 21885), (1185, 17508), (1422, 14590), (1459, 14220), (1580, 13131), (2370, 8754), (2844, 7295), (2918, 7110), (3555, 5836), (4377, 4740)]