19661408

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{313}}^1$

素因数の和:487

約数の個数: 48

約数和(自身を含む): 42096096

約数和(自身を除く): 22434688

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 151, 208, 302, 313, 416, 604, 626, 1208, 1252, 1963, 2416, 2504, 3926, 4069, 4832, 5008, 7852, 8138, 10016, 15704, 16276, 31408, 32552, 47263, 62816, 65104, 94526, 130208, 189052, 378104, 614419, 756208, 1228838, 1512416, 2457676, 4915352, 9830704, 19661408]

約数ペア:

[(1, 19661408), (2, 9830704), (4, 4915352), (8, 2457676), (13, 1512416), (16, 1228838), (26, 756208), (32, 614419), (52, 378104), (104, 189052), (151, 130208), (208, 94526), (302, 65104), (313, 62816), (416, 47263), (604, 32552), (626, 31408), (1208, 16276), (1252, 15704), (1963, 10016), (2416, 8138), (2504, 7852), (3926, 5008), (4069, 4832)]