128478520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{188939}}^1$

素因数の和:188967

約数の個数: 32

約数和(自身を含む): 306082800

約数和(自身を除く): 177604280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 188939, 377878, 755756, 944695, 1511512, 1889390, 3211963, 3778780, 6423926, 7557560, 12847852, 16059815, 25695704, 32119630, 64239260, 128478520]

約数ペア:

[(1, 128478520), (2, 64239260), (4, 32119630), (5, 25695704), (8, 16059815), (10, 12847852), (17, 7557560), (20, 6423926), (34, 3778780), (40, 3211963), (68, 1889390), (85, 1511512), (136, 944695), (170, 755756), (340, 377878), (680, 188939)]