28639100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:435

約数の個数: 72

約数和(自身を含む): 71745408

約数和(自身を除く): 43106308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 163, 175, 251, 326, 350, 502, 652, 700, 815, 1004, 1141, 1255, 1630, 1757, 2282, 2510, 3260, 3514, 4075, 4564, 5020, 5705, 6275, 7028, 8150, 8785, 11410, 12550, 16300, 17570, 22820, 25100, 28525, 35140, 40913, 43925, 57050, 81826, 87850, 114100, 163652, 175700, 204565, 286391, 409130, 572782, 818260, 1022825, 1145564, 1431955, 2045650, 2863910, 4091300, 5727820, 7159775, 14319550, 28639100]

約数ペア:

[(1, 28639100), (2, 14319550), (4, 7159775), (5, 5727820), (7, 4091300), (10, 2863910), (14, 2045650), (20, 1431955), (25, 1145564), (28, 1022825), (35, 818260), (50, 572782), (70, 409130), (100, 286391), (140, 204565), (163, 175700), (175, 163652), (251, 114100), (326, 87850), (350, 81826), (502, 57050), (652, 43925), (700, 40913), (815, 35140), (1004, 28525), (1141, 25100), (1255, 22820), (1630, 17570), (1757, 16300), (2282, 12550), (2510, 11410), (3260, 8785), (3514, 8150), (4075, 7028), (4564, 6275), (5020, 5705)]