17978295

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 31758336

約数和(自身を除く): 13780041

約数列:

[1, 3, 5, 15, 23, 31, 41, 69, 93, 115, 123, 155, 205, 345, 465, 615, 713, 943, 1271, 1681, 2139, 2829, 3565, 3813, 4715, 5043, 6355, 8405, 10695, 14145, 19065, 25215, 29233, 38663, 52111, 87699, 115989, 146165, 156333, 193315, 260555, 438495, 579945, 781665, 1198553, 3595659, 5992765, 17978295]

約数ペア:

[(1, 17978295), (3, 5992765), (5, 3595659), (15, 1198553), (23, 781665), (31, 579945), (41, 438495), (69, 260555), (93, 193315), (115, 156333), (123, 146165), (155, 115989), (205, 87699), (345, 52111), (465, 38663), (615, 29233), (713, 25215), (943, 19065), (1271, 14145), (1681, 10695), (2139, 8405), (2829, 6355), (3565, 5043), (3813, 4715)]