20658560

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^2\times {\mathrm{191}}^1$

素因数の和:236

約数の個数: 96

約数和(自身を含む): 53758080

約数和(自身を除く): 33099520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 169, 191, 208, 260, 320, 338, 382, 416, 520, 640, 676, 764, 832, 845, 955, 1040, 1352, 1528, 1664, 1690, 1910, 2080, 2483, 2704, 3056, 3380, 3820, 4160, 4966, 5408, 6112, 6760, 7640, 8320, 9932, 10816, 12224, 12415, 13520, 15280, 19864, 21632, 24448, 24830, 27040, 30560, 32279, 39728, 49660, 54080, 61120, 64558, 79456, 99320, 108160, 122240, 129116, 158912, 161395, 198640, 258232, 317824, 322790, 397280, 516464, 645580, 794560, 1032928, 1291160, 1589120, 2065856, 2582320, 4131712, 5164640, 10329280, 20658560]

約数ペア:

[(1, 20658560), (2, 10329280), (4, 5164640), (5, 4131712), (8, 2582320), (10, 2065856), (13, 1589120), (16, 1291160), (20, 1032928), (26, 794560), (32, 645580), (40, 516464), (52, 397280), (64, 322790), (65, 317824), (80, 258232), (104, 198640), (128, 161395), (130, 158912), (160, 129116), (169, 122240), (191, 108160), (208, 99320), (260, 79456), (320, 64558), (338, 61120), (382, 54080), (416, 49660), (520, 39728), (640, 32279), (676, 30560), (764, 27040), (832, 24830), (845, 24448), (955, 21632), (1040, 19864), (1352, 15280), (1528, 13520), (1664, 12415), (1690, 12224), (1910, 10816), (2080, 9932), (2483, 8320), (2704, 7640), (3056, 6760), (3380, 6112), (3820, 5408), (4160, 4966)]