21206970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2333}}^1$

素因数の和:2447

約数の個数: 48

約数和(自身を含む): 55707912

約数和(自身を除く): 34500942

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 101, 202, 303, 505, 606, 909, 1010, 1515, 1818, 2333, 3030, 4545, 4666, 6999, 9090, 11665, 13998, 20997, 23330, 34995, 41994, 69990, 104985, 209970, 235633, 471266, 706899, 1178165, 1413798, 2120697, 2356330, 3534495, 4241394, 7068990, 10603485, 21206970]

約数ペア:

[(1, 21206970), (2, 10603485), (3, 7068990), (5, 4241394), (6, 3534495), (9, 2356330), (10, 2120697), (15, 1413798), (18, 1178165), (30, 706899), (45, 471266), (90, 235633), (101, 209970), (202, 104985), (303, 69990), (505, 41994), (606, 34995), (909, 23330), (1010, 20997), (1515, 13998), (1818, 11665), (2333, 9090), (3030, 6999), (4545, 4666)]