15201520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 37988640

約数和(自身を除く): 22787120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 73, 76, 80, 95, 137, 146, 152, 190, 274, 292, 304, 365, 380, 548, 584, 685, 730, 760, 1096, 1168, 1370, 1387, 1460, 1520, 2192, 2603, 2740, 2774, 2920, 5206, 5480, 5548, 5840, 6935, 10001, 10412, 10960, 11096, 13015, 13870, 20002, 20824, 22192, 26030, 27740, 40004, 41648, 50005, 52060, 55480, 80008, 100010, 104120, 110960, 160016, 190019, 200020, 208240, 380038, 400040, 760076, 800080, 950095, 1520152, 1900190, 3040304, 3800380, 7600760, 15201520]

約数ペア:

[(1, 15201520), (2, 7600760), (4, 3800380), (5, 3040304), (8, 1900190), (10, 1520152), (16, 950095), (19, 800080), (20, 760076), (38, 400040), (40, 380038), (73, 208240), (76, 200020), (80, 190019), (95, 160016), (137, 110960), (146, 104120), (152, 100010), (190, 80008), (274, 55480), (292, 52060), (304, 50005), (365, 41648), (380, 40004), (548, 27740), (584, 26030), (685, 22192), (730, 20824), (760, 20002), (1096, 13870), (1168, 13015), (1370, 11096), (1387, 10960), (1460, 10412), (1520, 10001), (2192, 6935), (2603, 5840), (2740, 5548), (2774, 5480), (2920, 5206)]