21293680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14009}}^1$

素因数の和:14041

約数の個数: 40

約数和(自身を含む): 52117200

約数和(自身を除く): 30823520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14009, 28018, 56036, 70045, 112072, 140090, 224144, 266171, 280180, 532342, 560360, 1064684, 1120720, 1330855, 2129368, 2661710, 4258736, 5323420, 10646840, 21293680]

約数ペア:

[(1, 21293680), (2, 10646840), (4, 5323420), (5, 4258736), (8, 2661710), (10, 2129368), (16, 1330855), (19, 1120720), (20, 1064684), (38, 560360), (40, 532342), (76, 280180), (80, 266171), (95, 224144), (152, 140090), (190, 112072), (304, 70045), (380, 56036), (760, 28018), (1520, 14009)]