408979900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:500

約数の個数: 144

約数和(自身を含む): 1071931392

約数和(自身を除く): 662951492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 47, 50, 62, 70, 94, 100, 124, 140, 155, 175, 188, 217, 235, 310, 329, 350, 401, 434, 470, 620, 658, 700, 775, 802, 868, 940, 1085, 1175, 1316, 1457, 1550, 1604, 1645, 2005, 2170, 2350, 2807, 2914, 3100, 3290, 4010, 4340, 4700, 5425, 5614, 5828, 6580, 7285, 8020, 8225, 10025, 10199, 10850, 11228, 12431, 14035, 14570, 16450, 18847, 20050, 20398, 21700, 24862, 28070, 29140, 32900, 36425, 37694, 40100, 40796, 49724, 50995, 56140, 62155, 70175, 72850, 75388, 87017, 94235, 101990, 124310, 131929, 140350, 145700, 174034, 188470, 203980, 248620, 254975, 263858, 280700, 310775, 348068, 376940, 435085, 471175, 509950, 527716, 584257, 621550, 659645, 870170, 942350, 1019900, 1168514, 1243100, 1319290, 1740340, 1884700, 2175425, 2337028, 2638580, 2921285, 3298225, 4089799, 4350850, 5842570, 6596450, 8179598, 8701700, 11685140, 13192900, 14606425, 16359196, 20448995, 29212850, 40897990, 58425700, 81795980, 102244975, 204489950, 408979900]

約数ペア:

[(1, 408979900), (2, 204489950), (4, 102244975), (5, 81795980), (7, 58425700), (10, 40897990), (14, 29212850), (20, 20448995), (25, 16359196), (28, 14606425), (31, 13192900), (35, 11685140), (47, 8701700), (50, 8179598), (62, 6596450), (70, 5842570), (94, 4350850), (100, 4089799), (124, 3298225), (140, 2921285), (155, 2638580), (175, 2337028), (188, 2175425), (217, 1884700), (235, 1740340), (310, 1319290), (329, 1243100), (350, 1168514), (401, 1019900), (434, 942350), (470, 870170), (620, 659645), (658, 621550), (700, 584257), (775, 527716), (802, 509950), (868, 471175), (940, 435085), (1085, 376940), (1175, 348068), (1316, 310775), (1457, 280700), (1550, 263858), (1604, 254975), (1645, 248620), (2005, 203980), (2170, 188470), (2350, 174034), (2807, 145700), (2914, 140350), (3100, 131929), (3290, 124310), (4010, 101990), (4340, 94235), (4700, 87017), (5425, 75388), (5614, 72850), (5828, 70175), (6580, 62155), (7285, 56140), (8020, 50995), (8225, 49724), (10025, 40796), (10199, 40100), (10850, 37694), (11228, 36425), (12431, 32900), (14035, 29140), (14570, 28070), (16450, 24862), (18847, 21700), (20050, 20398)]