20155980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25841}}^1$

素因数の和:25866

約数の個数: 48

約数和(自身を含む): 60780384

約数和(自身を除く): 40624404

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, 25841, 51682, 77523, 103364, 129205, 155046, 258410, 310092, 335933, 387615, 516820, 671866, 775230, 1007799, 1343732, 1550460, 1679665, 2015598, 3359330, 4031196, 5038995, 6718660, 10077990, 20155980]

約数ペア:

[(1, 20155980), (2, 10077990), (3, 6718660), (4, 5038995), (5, 4031196), (6, 3359330), (10, 2015598), (12, 1679665), (13, 1550460), (15, 1343732), (20, 1007799), (26, 775230), (30, 671866), (39, 516820), (52, 387615), (60, 335933), (65, 310092), (78, 258410), (130, 155046), (156, 129205), (195, 103364), (260, 77523), (390, 51682), (780, 25841)]