19688360

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8069}}^1$

素因数の和:8141

約数の個数: 32

約数和(自身を含む): 45030600

約数和(自身を除く): 25342240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8069, 16138, 32276, 40345, 64552, 80690, 161380, 322760, 492209, 984418, 1968836, 2461045, 3937672, 4922090, 9844180, 19688360]

約数ペア:

[(1, 19688360), (2, 9844180), (4, 4922090), (5, 3937672), (8, 2461045), (10, 1968836), (20, 984418), (40, 492209), (61, 322760), (122, 161380), (244, 80690), (305, 64552), (488, 40345), (610, 32276), (1220, 16138), (2440, 8069)]