19444750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 40674816

約数和(自身を除く): 21230066

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 125, 130, 155, 193, 250, 310, 325, 386, 403, 650, 775, 806, 965, 1550, 1625, 1930, 2015, 2509, 3250, 3875, 4030, 4825, 5018, 5983, 7750, 9650, 10075, 11966, 12545, 20150, 24125, 25090, 29915, 48250, 50375, 59830, 62725, 77779, 100750, 125450, 149575, 155558, 299150, 313625, 388895, 627250, 747875, 777790, 1495750, 1944475, 3888950, 9722375, 19444750]

約数ペア:

[(1, 19444750), (2, 9722375), (5, 3888950), (10, 1944475), (13, 1495750), (25, 777790), (26, 747875), (31, 627250), (50, 388895), (62, 313625), (65, 299150), (125, 155558), (130, 149575), (155, 125450), (193, 100750), (250, 77779), (310, 62725), (325, 59830), (386, 50375), (403, 48250), (650, 29915), (775, 25090), (806, 24125), (965, 20150), (1550, 12545), (1625, 11966), (1930, 10075), (2015, 9650), (2509, 7750), (3250, 5983), (3875, 5018), (4030, 4825)]