16821970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 35354880

約数和(自身を除く): 18532910

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 61, 109, 110, 115, 122, 218, 230, 253, 305, 506, 545, 610, 671, 1090, 1199, 1265, 1342, 1403, 2398, 2507, 2530, 2806, 3355, 5014, 5995, 6649, 6710, 7015, 11990, 12535, 13298, 14030, 15433, 25070, 27577, 30866, 33245, 55154, 66490, 73139, 77165, 137885, 146278, 152927, 154330, 275770, 305854, 365695, 731390, 764635, 1529270, 1682197, 3364394, 8410985, 16821970]

約数ペア:

[(1, 16821970), (2, 8410985), (5, 3364394), (10, 1682197), (11, 1529270), (22, 764635), (23, 731390), (46, 365695), (55, 305854), (61, 275770), (109, 154330), (110, 152927), (115, 146278), (122, 137885), (218, 77165), (230, 73139), (253, 66490), (305, 55154), (506, 33245), (545, 30866), (610, 27577), (671, 25070), (1090, 15433), (1199, 14030), (1265, 13298), (1342, 12535), (1403, 11990), (2398, 7015), (2507, 6710), (2530, 6649), (2806, 5995), (3355, 5014)]