21585040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11731}}^1$

素因数の和:11767

約数の個数: 40

約数和(自身を含む): 52371648

約数和(自身を除く): 30786608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11731, 23462, 46924, 58655, 93848, 117310, 187696, 234620, 269813, 469240, 539626, 938480, 1079252, 1349065, 2158504, 2698130, 4317008, 5396260, 10792520, 21585040]

約数ペア:

[(1, 21585040), (2, 10792520), (4, 5396260), (5, 4317008), (8, 2698130), (10, 2158504), (16, 1349065), (20, 1079252), (23, 938480), (40, 539626), (46, 469240), (80, 269813), (92, 234620), (115, 187696), (184, 117310), (230, 93848), (368, 58655), (460, 46924), (920, 23462), (1840, 11731)]