21906540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7159}}^1$

素因数の和:7191

約数の個数: 72

約数和(自身を含む): 70368480

約数和(自身を除く): 48461940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 7159, 14318, 21477, 28636, 35795, 42954, 64431, 71590, 85908, 107385, 121703, 128862, 143180, 214770, 243406, 257724, 322155, 365109, 429540, 486812, 608515, 644310, 730218, 1095327, 1217030, 1288620, 1460436, 1825545, 2190654, 2434060, 3651090, 4381308, 5476635, 7302180, 10953270, 21906540]

約数ペア:

[(1, 21906540), (2, 10953270), (3, 7302180), (4, 5476635), (5, 4381308), (6, 3651090), (9, 2434060), (10, 2190654), (12, 1825545), (15, 1460436), (17, 1288620), (18, 1217030), (20, 1095327), (30, 730218), (34, 644310), (36, 608515), (45, 486812), (51, 429540), (60, 365109), (68, 322155), (85, 257724), (90, 243406), (102, 214770), (153, 143180), (170, 128862), (180, 121703), (204, 107385), (255, 85908), (306, 71590), (340, 64431), (510, 42954), (612, 35795), (765, 28636), (1020, 21477), (1530, 14318), (3060, 7159)]