21695320

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 50971680

約数和(自身を除く): 29276360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 107, 137, 148, 185, 214, 274, 296, 370, 428, 535, 548, 685, 740, 856, 1070, 1096, 1370, 1480, 2140, 2740, 3959, 4280, 5069, 5480, 7918, 10138, 14659, 15836, 19795, 20276, 25345, 29318, 31672, 39590, 40552, 50690, 58636, 73295, 79180, 101380, 117272, 146590, 158360, 202760, 293180, 542383, 586360, 1084766, 2169532, 2711915, 4339064, 5423830, 10847660, 21695320]

約数ペア:

[(1, 21695320), (2, 10847660), (4, 5423830), (5, 4339064), (8, 2711915), (10, 2169532), (20, 1084766), (37, 586360), (40, 542383), (74, 293180), (107, 202760), (137, 158360), (148, 146590), (185, 117272), (214, 101380), (274, 79180), (296, 73295), (370, 58636), (428, 50690), (535, 40552), (548, 39590), (685, 31672), (740, 29318), (856, 25345), (1070, 20276), (1096, 19795), (1370, 15836), (1480, 14659), (2140, 10138), (2740, 7918), (3959, 5480), (4280, 5069)]