71638740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20947}}^1$

素因数の和:20981

約数の個数: 72

約数和(自身を含む): 228752160

約数和(自身を除く): 157113420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 20947, 41894, 62841, 83788, 104735, 125682, 188523, 209470, 251364, 314205, 377046, 397993, 418940, 628410, 754092, 795986, 942615, 1193979, 1256820, 1591972, 1885230, 1989965, 2387958, 3581937, 3770460, 3979930, 4775916, 5969895, 7163874, 7959860, 11939790, 14327748, 17909685, 23879580, 35819370, 71638740]

約数ペア:

[(1, 71638740), (2, 35819370), (3, 23879580), (4, 17909685), (5, 14327748), (6, 11939790), (9, 7959860), (10, 7163874), (12, 5969895), (15, 4775916), (18, 3979930), (19, 3770460), (20, 3581937), (30, 2387958), (36, 1989965), (38, 1885230), (45, 1591972), (57, 1256820), (60, 1193979), (76, 942615), (90, 795986), (95, 754092), (114, 628410), (171, 418940), (180, 397993), (190, 377046), (228, 314205), (285, 251364), (342, 209470), (380, 188523), (570, 125682), (684, 104735), (855, 83788), (1140, 62841), (1710, 41894), (3420, 20947)]