80648420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1\times {\mathrm{659}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 176299200

約数和(自身を除く): 95650780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 211, 290, 422, 580, 659, 844, 1055, 1318, 2110, 2636, 3295, 4220, 6119, 6590, 12238, 13180, 19111, 24476, 30595, 38222, 61190, 76444, 95555, 122380, 139049, 191110, 278098, 382220, 556196, 695245, 1390490, 2780980, 4032421, 8064842, 16129684, 20162105, 40324210, 80648420]

約数ペア:

[(1, 80648420), (2, 40324210), (4, 20162105), (5, 16129684), (10, 8064842), (20, 4032421), (29, 2780980), (58, 1390490), (116, 695245), (145, 556196), (211, 382220), (290, 278098), (422, 191110), (580, 139049), (659, 122380), (844, 95555), (1055, 76444), (1318, 61190), (2110, 38222), (2636, 30595), (3295, 24476), (4220, 19111), (6119, 13180), (6590, 12238)]