19611880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 27666200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 151, 170, 191, 302, 340, 382, 604, 680, 755, 764, 955, 1208, 1510, 1528, 1910, 2567, 3020, 3247, 3820, 5134, 6040, 6494, 7640, 10268, 12835, 12988, 16235, 20536, 25670, 25976, 28841, 32470, 51340, 57682, 64940, 102680, 115364, 129880, 144205, 230728, 288410, 490297, 576820, 980594, 1153640, 1961188, 2451485, 3922376, 4902970, 9805940, 19611880]

約数ペア:

[(1, 19611880), (2, 9805940), (4, 4902970), (5, 3922376), (8, 2451485), (10, 1961188), (17, 1153640), (20, 980594), (34, 576820), (40, 490297), (68, 288410), (85, 230728), (136, 144205), (151, 129880), (170, 115364), (191, 102680), (302, 64940), (340, 57682), (382, 51340), (604, 32470), (680, 28841), (755, 25976), (764, 25670), (955, 20536), (1208, 16235), (1510, 12988), (1528, 12835), (1910, 10268), (2567, 7640), (3020, 6494), (3247, 6040), (3820, 5134)]