161123120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64969}}^1$

素因数の和:65013

約数の個数: 40

約数和(自身を含む): 386701440

約数和(自身を除く): 225578320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 64969, 129938, 259876, 324845, 519752, 649690, 1039504, 1299380, 2014039, 2598760, 4028078, 5197520, 8056156, 10070195, 16112312, 20140390, 32224624, 40280780, 80561560, 161123120]

約数ペア:

[(1, 161123120), (2, 80561560), (4, 40280780), (5, 32224624), (8, 20140390), (10, 16112312), (16, 10070195), (20, 8056156), (31, 5197520), (40, 4028078), (62, 2598760), (80, 2014039), (124, 1299380), (155, 1039504), (248, 649690), (310, 519752), (496, 324845), (620, 259876), (1240, 129938), (2480, 64969)]