199989900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{20201}}^1$

素因数の和:20232

約数の個数: 108

約数和(自身を含む): 683878104

約数和(自身を除く): 483888204

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 132, 150, 165, 180, 198, 220, 225, 275, 300, 330, 396, 450, 495, 550, 660, 825, 900, 990, 1100, 1650, 1980, 2475, 3300, 4950, 9900, 20201, 40402, 60603, 80804, 101005, 121206, 181809, 202010, 222211, 242412, 303015, 363618, 404020, 444422, 505025, 606030, 666633, 727236, 888844, 909045, 1010050, 1111055, 1212060, 1333266, 1515075, 1818090, 1999899, 2020100, 2222110, 2666532, 3030150, 3333165, 3636180, 3999798, 4444220, 4545225, 5555275, 6060300, 6666330, 7999596, 9090450, 9999495, 11110550, 13332660, 16665825, 18180900, 19998990, 22221100, 33331650, 39997980, 49997475, 66663300, 99994950, 199989900]

約数ペア:

[(1, 199989900), (2, 99994950), (3, 66663300), (4, 49997475), (5, 39997980), (6, 33331650), (9, 22221100), (10, 19998990), (11, 18180900), (12, 16665825), (15, 13332660), (18, 11110550), (20, 9999495), (22, 9090450), (25, 7999596), (30, 6666330), (33, 6060300), (36, 5555275), (44, 4545225), (45, 4444220), (50, 3999798), (55, 3636180), (60, 3333165), (66, 3030150), (75, 2666532), (90, 2222110), (99, 2020100), (100, 1999899), (110, 1818090), (132, 1515075), (150, 1333266), (165, 1212060), (180, 1111055), (198, 1010050), (220, 909045), (225, 888844), (275, 727236), (300, 666633), (330, 606030), (396, 505025), (450, 444422), (495, 404020), (550, 363618), (660, 303015), (825, 242412), (900, 222211), (990, 202010), (1100, 181809), (1650, 121206), (1980, 101005), (2475, 80804), (3300, 60603), (4950, 40402), (9900, 20201)]