21041040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87671}}^1$

素因数の和:87687

約数の個数: 40

約数和(自身を含む): 65227968

約数和(自身を除く): 44186928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87671, 175342, 263013, 350684, 438355, 526026, 701368, 876710, 1052052, 1315065, 1402736, 1753420, 2104104, 2630130, 3506840, 4208208, 5260260, 7013680, 10520520, 21041040]

約数ペア:

[(1, 21041040), (2, 10520520), (3, 7013680), (4, 5260260), (5, 4208208), (6, 3506840), (8, 2630130), (10, 2104104), (12, 1753420), (15, 1402736), (16, 1315065), (20, 1052052), (24, 876710), (30, 701368), (40, 526026), (48, 438355), (60, 350684), (80, 263013), (120, 175342), (240, 87671)]