21604900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 50309280

約数和(自身を除く): 28704380

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 83, 95, 100, 137, 166, 190, 274, 332, 380, 415, 475, 548, 685, 830, 950, 1370, 1577, 1660, 1900, 2075, 2603, 2740, 3154, 3425, 4150, 5206, 6308, 6850, 7885, 8300, 10412, 11371, 13015, 13700, 15770, 22742, 26030, 31540, 39425, 45484, 52060, 56855, 65075, 78850, 113710, 130150, 157700, 216049, 227420, 260300, 284275, 432098, 568550, 864196, 1080245, 1137100, 2160490, 4320980, 5401225, 10802450, 21604900]

約数ペア:

[(1, 21604900), (2, 10802450), (4, 5401225), (5, 4320980), (10, 2160490), (19, 1137100), (20, 1080245), (25, 864196), (38, 568550), (50, 432098), (76, 284275), (83, 260300), (95, 227420), (100, 216049), (137, 157700), (166, 130150), (190, 113710), (274, 78850), (332, 65075), (380, 56855), (415, 52060), (475, 45484), (548, 39425), (685, 31540), (830, 26030), (950, 22742), (1370, 15770), (1577, 13700), (1660, 13015), (1900, 11371), (2075, 10412), (2603, 8300), (2740, 7885), (3154, 6850), (3425, 6308), (4150, 5206)]