81199460

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{557}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 176332464

約数和(自身を除く): 95133004

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 197, 370, 394, 557, 740, 788, 985, 1114, 1970, 2228, 2785, 3940, 5570, 7289, 11140, 14578, 20609, 29156, 36445, 41218, 72890, 82436, 103045, 109729, 145780, 206090, 219458, 412180, 438916, 548645, 1097290, 2194580, 4059973, 8119946, 16239892, 20299865, 40599730, 81199460]

約数ペア:

[(1, 81199460), (2, 40599730), (4, 20299865), (5, 16239892), (10, 8119946), (20, 4059973), (37, 2194580), (74, 1097290), (148, 548645), (185, 438916), (197, 412180), (370, 219458), (394, 206090), (557, 145780), (740, 109729), (788, 103045), (985, 82436), (1114, 72890), (1970, 41218), (2228, 36445), (2785, 29156), (3940, 20609), (5570, 14578), (7289, 11140)]