21352515

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{487}}^1$

素因数の和:611

約数の個数: 32

約数和(自身を含む): 35604480

約数和(自身を除く): 14251965

約数列:

[1, 3, 5, 15, 37, 79, 111, 185, 237, 395, 487, 555, 1185, 1461, 2435, 2923, 7305, 8769, 14615, 18019, 38473, 43845, 54057, 90095, 115419, 192365, 270285, 577095, 1423501, 4270503, 7117505, 21352515]

約数ペア:

[(1, 21352515), (3, 7117505), (5, 4270503), (15, 1423501), (37, 577095), (79, 270285), (111, 192365), (185, 115419), (237, 90095), (395, 54057), (487, 43845), (555, 38473), (1185, 18019), (1461, 14615), (2435, 8769), (2923, 7305)]