20783805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1511}}^1$

素因数の和:1657

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17536323

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 131, 393, 655, 917, 1511, 1965, 2751, 4533, 4585, 7555, 10577, 13755, 22665, 31731, 52885, 158655, 197941, 593823, 989705, 1385587, 2969115, 4156761, 6927935, 20783805]

約数ペア:

[(1, 20783805), (3, 6927935), (5, 4156761), (7, 2969115), (15, 1385587), (21, 989705), (35, 593823), (105, 197941), (131, 158655), (393, 52885), (655, 31731), (917, 22665), (1511, 13755), (1965, 10577), (2751, 7555), (4533, 4585)]