28538900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{757}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 69084120

約数和(自身を除く): 40545220

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 29, 50, 52, 58, 65, 100, 116, 130, 145, 260, 290, 325, 377, 580, 650, 725, 754, 757, 1300, 1450, 1508, 1514, 1885, 2900, 3028, 3770, 3785, 7540, 7570, 9425, 9841, 15140, 18850, 18925, 19682, 21953, 37700, 37850, 39364, 43906, 49205, 75700, 87812, 98410, 109765, 196820, 219530, 246025, 285389, 439060, 492050, 548825, 570778, 984100, 1097650, 1141556, 1426945, 2195300, 2853890, 5707780, 7134725, 14269450, 28538900]

約数ペア:

[(1, 28538900), (2, 14269450), (4, 7134725), (5, 5707780), (10, 2853890), (13, 2195300), (20, 1426945), (25, 1141556), (26, 1097650), (29, 984100), (50, 570778), (52, 548825), (58, 492050), (65, 439060), (100, 285389), (116, 246025), (130, 219530), (145, 196820), (260, 109765), (290, 98410), (325, 87812), (377, 75700), (580, 49205), (650, 43906), (725, 39364), (754, 37850), (757, 37700), (1300, 21953), (1450, 19682), (1508, 18925), (1514, 18850), (1885, 15140), (2900, 9841), (3028, 9425), (3770, 7570), (3785, 7540)]