19951620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25579}}^1$

素因数の和:25604

約数の個数: 48

約数和(自身を含む): 60164160

約数和(自身を除く): 40212540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25579, 51158, 76737, 102316, 127895, 153474, 255790, 306948, 332527, 383685, 511580, 665054, 767370, 997581, 1330108, 1534740, 1662635, 1995162, 3325270, 3990324, 4987905, 6650540, 9975810, 19951620]

約数ペア:

[(1, 19951620), (2, 9975810), (3, 6650540), (4, 4987905), (5, 3990324), (6, 3325270), (10, 1995162), (12, 1662635), (13, 1534740), (15, 1330108), (20, 997581), (26, 767370), (30, 665054), (39, 511580), (52, 383685), (60, 332527), (65, 306948), (78, 255790), (130, 153474), (156, 127895), (195, 102316), (260, 76737), (390, 51158), (780, 25579)]