19806280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{929}}^1$

素因数の和:994

約数の個数: 64

約数和(自身を含む): 49215600

約数和(自身を除く): 29409320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 929, 1066, 1640, 1858, 2132, 2665, 3716, 4264, 4645, 5330, 7432, 9290, 10660, 12077, 18580, 21320, 24154, 37160, 38089, 48308, 60385, 76178, 96616, 120770, 152356, 190445, 241540, 304712, 380890, 483080, 495157, 761780, 990314, 1523560, 1980628, 2475785, 3961256, 4951570, 9903140, 19806280]

約数ペア:

[(1, 19806280), (2, 9903140), (4, 4951570), (5, 3961256), (8, 2475785), (10, 1980628), (13, 1523560), (20, 990314), (26, 761780), (40, 495157), (41, 483080), (52, 380890), (65, 304712), (82, 241540), (104, 190445), (130, 152356), (164, 120770), (205, 96616), (260, 76178), (328, 60385), (410, 48308), (520, 38089), (533, 37160), (820, 24154), (929, 21320), (1066, 18580), (1640, 12077), (1858, 10660), (2132, 9290), (2665, 7432), (3716, 5330), (4264, 4645)]