21980178

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3581}}^1$

素因数の和:3631

約数の個数: 48

約数和(自身を含む): 53644032

約数和(自身を除く): 31663854

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 31, 33, 62, 66, 93, 99, 186, 198, 279, 341, 558, 682, 1023, 2046, 3069, 3581, 6138, 7162, 10743, 21486, 32229, 39391, 64458, 78782, 111011, 118173, 222022, 236346, 333033, 354519, 666066, 709038, 999099, 1221121, 1998198, 2442242, 3663363, 7326726, 10990089, 21980178]

約数ペア:

[(1, 21980178), (2, 10990089), (3, 7326726), (6, 3663363), (9, 2442242), (11, 1998198), (18, 1221121), (22, 999099), (31, 709038), (33, 666066), (62, 354519), (66, 333033), (93, 236346), (99, 222022), (186, 118173), (198, 111011), (279, 78782), (341, 64458), (558, 39391), (682, 32229), (1023, 21486), (2046, 10743), (3069, 7162), (3581, 6138)]