20758480

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7013}}^1$

素因数の和:7063

約数の個数: 40

約数和(自身を含む): 49574952

約数和(自身を除く): 28816472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7013, 14026, 28052, 35065, 56104, 70130, 112208, 140260, 259481, 280520, 518962, 561040, 1037924, 1297405, 2075848, 2594810, 4151696, 5189620, 10379240, 20758480]

約数ペア:

[(1, 20758480), (2, 10379240), (4, 5189620), (5, 4151696), (8, 2594810), (10, 2075848), (16, 1297405), (20, 1037924), (37, 561040), (40, 518962), (74, 280520), (80, 259481), (148, 140260), (185, 112208), (296, 70130), (370, 56104), (592, 35065), (740, 28052), (1480, 14026), (2960, 7013)]