80244700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:427

約数の個数: 72

約数和(自身を含む): 183738240

約数和(自身を除く): 103493540

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 139, 230, 251, 278, 460, 502, 556, 575, 695, 1004, 1150, 1255, 1390, 2300, 2510, 2780, 3197, 3475, 5020, 5773, 6275, 6394, 6950, 11546, 12550, 12788, 13900, 15985, 23092, 25100, 28865, 31970, 34889, 57730, 63940, 69778, 79925, 115460, 139556, 144325, 159850, 174445, 288650, 319700, 348890, 577300, 697780, 802447, 872225, 1604894, 1744450, 3209788, 3488900, 4012235, 8024470, 16048940, 20061175, 40122350, 80244700]

約数ペア:

[(1, 80244700), (2, 40122350), (4, 20061175), (5, 16048940), (10, 8024470), (20, 4012235), (23, 3488900), (25, 3209788), (46, 1744450), (50, 1604894), (92, 872225), (100, 802447), (115, 697780), (139, 577300), (230, 348890), (251, 319700), (278, 288650), (460, 174445), (502, 159850), (556, 144325), (575, 139556), (695, 115460), (1004, 79925), (1150, 69778), (1255, 63940), (1390, 57730), (2300, 34889), (2510, 31970), (2780, 28865), (3197, 25100), (3475, 23092), (5020, 15985), (5773, 13900), (6275, 12788), (6394, 12550), (6950, 11546)]