28287700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:302

約数の個数: 108

約数和(自身を含む): 74807712

約数和(自身を除く): 46520012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 49, 50, 70, 92, 98, 100, 115, 140, 161, 175, 196, 230, 245, 251, 322, 350, 460, 490, 502, 575, 644, 700, 805, 980, 1004, 1127, 1150, 1225, 1255, 1610, 1757, 2254, 2300, 2450, 2510, 3220, 3514, 4025, 4508, 4900, 5020, 5635, 5773, 6275, 7028, 8050, 8785, 11270, 11546, 12299, 12550, 16100, 17570, 22540, 23092, 24598, 25100, 28175, 28865, 35140, 40411, 43925, 49196, 56350, 57730, 61495, 80822, 87850, 112700, 115460, 122990, 144325, 161644, 175700, 202055, 245980, 282877, 288650, 307475, 404110, 565754, 577300, 614950, 808220, 1010275, 1131508, 1229900, 1414385, 2020550, 2828770, 4041100, 5657540, 7071925, 14143850, 28287700]

約数ペア:

[(1, 28287700), (2, 14143850), (4, 7071925), (5, 5657540), (7, 4041100), (10, 2828770), (14, 2020550), (20, 1414385), (23, 1229900), (25, 1131508), (28, 1010275), (35, 808220), (46, 614950), (49, 577300), (50, 565754), (70, 404110), (92, 307475), (98, 288650), (100, 282877), (115, 245980), (140, 202055), (161, 175700), (175, 161644), (196, 144325), (230, 122990), (245, 115460), (251, 112700), (322, 87850), (350, 80822), (460, 61495), (490, 57730), (502, 56350), (575, 49196), (644, 43925), (700, 40411), (805, 35140), (980, 28865), (1004, 28175), (1127, 25100), (1150, 24598), (1225, 23092), (1255, 22540), (1610, 17570), (1757, 16100), (2254, 12550), (2300, 12299), (2450, 11546), (2510, 11270), (3220, 8785), (3514, 8050), (4025, 7028), (4508, 6275), (4900, 5773), (5020, 5635)]