213756975

素因数分解:

$3^4\times 5^2\times {\mathrm{283}}^1\times {\mathrm{373}}^1$

素因数の和:678

約数の個数: 60

約数和(自身を含む): 398416216

約数和(自身を除く): 184659241

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 283, 373, 405, 675, 849, 1119, 1415, 1865, 2025, 2547, 3357, 4245, 5595, 7075, 7641, 9325, 10071, 12735, 16785, 21225, 22923, 27975, 30213, 38205, 50355, 63675, 83925, 105559, 114615, 151065, 191025, 251775, 316677, 527795, 573075, 755325, 950031, 1583385, 2638975, 2850093, 4750155, 7916925, 8550279, 14250465, 23750775, 42751395, 71252325, 213756975]

約数ペア:

[(1, 213756975), (3, 71252325), (5, 42751395), (9, 23750775), (15, 14250465), (25, 8550279), (27, 7916925), (45, 4750155), (75, 2850093), (81, 2638975), (135, 1583385), (225, 950031), (283, 755325), (373, 573075), (405, 527795), (675, 316677), (849, 251775), (1119, 191025), (1415, 151065), (1865, 114615), (2025, 105559), (2547, 83925), (3357, 63675), (4245, 50355), (5595, 38205), (7075, 30213), (7641, 27975), (9325, 22923), (10071, 21225), (12735, 16785)]