16818405

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 29773440

約数和(自身を除く): 12955035

約数列:

[1, 3, 5, 15, 23, 29, 41, 69, 87, 115, 123, 145, 205, 345, 435, 615, 667, 943, 1189, 1681, 2001, 2829, 3335, 3567, 4715, 5043, 5945, 8405, 10005, 14145, 17835, 25215, 27347, 38663, 48749, 82041, 115989, 136735, 146247, 193315, 243745, 410205, 579945, 731235, 1121227, 3363681, 5606135, 16818405]

約数ペア:

[(1, 16818405), (3, 5606135), (5, 3363681), (15, 1121227), (23, 731235), (29, 579945), (41, 410205), (69, 243745), (87, 193315), (115, 146247), (123, 136735), (145, 115989), (205, 82041), (345, 48749), (435, 38663), (615, 27347), (667, 25215), (943, 17835), (1189, 14145), (1681, 10005), (2001, 8405), (2829, 5945), (3335, 5043), (3567, 4715)]