21078240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43913}}^1$

素因数の和:43931

約数の個数: 48

約数和(自身を含む): 66397968

約数和(自身を除く): 45319728

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 43913, 87826, 131739, 175652, 219565, 263478, 351304, 439130, 526956, 658695, 702608, 878260, 1053912, 1317390, 1405216, 1756520, 2107824, 2634780, 3513040, 4215648, 5269560, 7026080, 10539120, 21078240]

約数ペア:

[(1, 21078240), (2, 10539120), (3, 7026080), (4, 5269560), (5, 4215648), (6, 3513040), (8, 2634780), (10, 2107824), (12, 1756520), (15, 1405216), (16, 1317390), (20, 1053912), (24, 878260), (30, 702608), (32, 658695), (40, 526956), (48, 439130), (60, 351304), (80, 263478), (96, 219565), (120, 175652), (160, 131739), (240, 87826), (480, 43913)]