388655420

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{4639}}^1$

素因数の和:4778

約数の個数: 48

約数和(自身を含む): 841881600

約数和(自身を除く): 453226180

約数列:

[1, 2, 4, 5, 10, 20, 59, 71, 118, 142, 236, 284, 295, 355, 590, 710, 1180, 1420, 4189, 4639, 8378, 9278, 16756, 18556, 20945, 23195, 41890, 46390, 83780, 92780, 273701, 329369, 547402, 658738, 1094804, 1317476, 1368505, 1646845, 2737010, 3293690, 5474020, 6587380, 19432771, 38865542, 77731084, 97163855, 194327710, 388655420]

約数ペア:

[(1, 388655420), (2, 194327710), (4, 97163855), (5, 77731084), (10, 38865542), (20, 19432771), (59, 6587380), (71, 5474020), (118, 3293690), (142, 2737010), (236, 1646845), (284, 1368505), (295, 1317476), (355, 1094804), (590, 658738), (710, 547402), (1180, 329369), (1420, 273701), (4189, 92780), (4639, 83780), (8378, 46390), (9278, 41890), (16756, 23195), (18556, 20945)]