19947632

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:477

約数の個数: 40

約数和(自身を含む): 40330752

約数和(自身を除く): 20383120

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 131, 248, 262, 307, 496, 524, 614, 1048, 1228, 2096, 2456, 4061, 4912, 8122, 9517, 16244, 19034, 32488, 38068, 40217, 64976, 76136, 80434, 152272, 160868, 321736, 643472, 1246727, 2493454, 4986908, 9973816, 19947632]

約数ペア:

[(1, 19947632), (2, 9973816), (4, 4986908), (8, 2493454), (16, 1246727), (31, 643472), (62, 321736), (124, 160868), (131, 152272), (248, 80434), (262, 76136), (307, 64976), (496, 40217), (524, 38068), (614, 32488), (1048, 19034), (1228, 16244), (2096, 9517), (2456, 8122), (4061, 4912)]