19854415

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:703

約数の個数: 32

約数和(自身を含む): 29122560

約数和(自身を除く): 9268145

約数列:

[1, 5, 7, 29, 31, 35, 145, 155, 203, 217, 631, 899, 1015, 1085, 3155, 4417, 4495, 6293, 18299, 19561, 22085, 31465, 91495, 97805, 128093, 136927, 567269, 640465, 684635, 2836345, 3970883, 19854415]

約数ペア:

[(1, 19854415), (5, 3970883), (7, 2836345), (29, 684635), (31, 640465), (35, 567269), (145, 136927), (155, 128093), (203, 97805), (217, 91495), (631, 31465), (899, 22085), (1015, 19561), (1085, 18299), (3155, 6293), (4417, 4495)]