21295710

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:511

約数の個数: 80

約数和(自身を含む): 58335552

約数和(自身を除く): 37039842

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 61, 81, 90, 122, 135, 162, 183, 270, 305, 366, 405, 431, 549, 610, 810, 862, 915, 1098, 1293, 1647, 1830, 2155, 2586, 2745, 3294, 3879, 4310, 4941, 5490, 6465, 7758, 8235, 9882, 11637, 12930, 16470, 19395, 23274, 24705, 26291, 34911, 38790, 49410, 52582, 58185, 69822, 78873, 116370, 131455, 157746, 174555, 236619, 262910, 349110, 394365, 473238, 709857, 788730, 1183095, 1419714, 2129571, 2366190, 3549285, 4259142, 7098570, 10647855, 21295710]

約数ペア:

[(1, 21295710), (2, 10647855), (3, 7098570), (5, 4259142), (6, 3549285), (9, 2366190), (10, 2129571), (15, 1419714), (18, 1183095), (27, 788730), (30, 709857), (45, 473238), (54, 394365), (61, 349110), (81, 262910), (90, 236619), (122, 174555), (135, 157746), (162, 131455), (183, 116370), (270, 78873), (305, 69822), (366, 58185), (405, 52582), (431, 49410), (549, 38790), (610, 34911), (810, 26291), (862, 24705), (915, 23274), (1098, 19395), (1293, 16470), (1647, 12930), (1830, 11637), (2155, 9882), (2586, 8235), (2745, 7758), (3294, 6465), (3879, 5490), (4310, 4941)]