19809760

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7283}}^1$

素因数の和:7315

約数の個数: 48

約数和(自身を含む): 49560336

約数和(自身を除く): 29750576

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7283, 14566, 29132, 36415, 58264, 72830, 116528, 123811, 145660, 233056, 247622, 291320, 495244, 582640, 619055, 990488, 1165280, 1238110, 1980976, 2476220, 3961952, 4952440, 9904880, 19809760]

約数ペア:

[(1, 19809760), (2, 9904880), (4, 4952440), (5, 3961952), (8, 2476220), (10, 1980976), (16, 1238110), (17, 1165280), (20, 990488), (32, 619055), (34, 582640), (40, 495244), (68, 291320), (80, 247622), (85, 233056), (136, 145660), (160, 123811), (170, 116528), (272, 72830), (340, 58264), (544, 36415), (680, 29132), (1360, 14566), (2720, 7283)]