19947105

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 36341760

約数和(自身を除く): 16394655

約数列:

[1, 3, 5, 9, 15, 31, 45, 79, 93, 155, 181, 237, 279, 395, 465, 543, 711, 905, 1185, 1395, 1629, 2449, 2715, 3555, 5611, 7347, 8145, 12245, 14299, 16833, 22041, 28055, 36735, 42897, 50499, 71495, 84165, 110205, 128691, 214485, 252495, 443269, 643455, 1329807, 2216345, 3989421, 6649035, 19947105]

約数ペア:

[(1, 19947105), (3, 6649035), (5, 3989421), (9, 2216345), (15, 1329807), (31, 643455), (45, 443269), (79, 252495), (93, 214485), (155, 128691), (181, 110205), (237, 84165), (279, 71495), (395, 50499), (465, 42897), (543, 36735), (711, 28055), (905, 22041), (1185, 16833), (1395, 14299), (1629, 12245), (2449, 8145), (2715, 7347), (3555, 5611)]