19721070

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:367

約数の個数: 80

約数和(自身を含む): 53787888

約数和(自身を除く): 34066818

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 97, 135, 162, 194, 251, 270, 291, 405, 485, 502, 582, 753, 810, 873, 970, 1255, 1455, 1506, 1746, 2259, 2510, 2619, 2910, 3765, 4365, 4518, 5238, 6777, 7530, 7857, 8730, 11295, 13095, 13554, 15714, 20331, 22590, 24347, 26190, 33885, 39285, 40662, 48694, 67770, 73041, 78570, 101655, 121735, 146082, 203310, 219123, 243470, 365205, 438246, 657369, 730410, 1095615, 1314738, 1972107, 2191230, 3286845, 3944214, 6573690, 9860535, 19721070]

約数ペア:

[(1, 19721070), (2, 9860535), (3, 6573690), (5, 3944214), (6, 3286845), (9, 2191230), (10, 1972107), (15, 1314738), (18, 1095615), (27, 730410), (30, 657369), (45, 438246), (54, 365205), (81, 243470), (90, 219123), (97, 203310), (135, 146082), (162, 121735), (194, 101655), (251, 78570), (270, 73041), (291, 67770), (405, 48694), (485, 40662), (502, 39285), (582, 33885), (753, 26190), (810, 24347), (873, 22590), (970, 20331), (1255, 15714), (1455, 13554), (1506, 13095), (1746, 11295), (2259, 8730), (2510, 7857), (2619, 7530), (2910, 6777), (3765, 5238), (4365, 4518)]