21528450

素因数分解:

$2^1\times 3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:489

約数の個数: 96

約数和(自身を含む): 61067520

約数和(自身を除く): 39539070

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 37, 45, 50, 54, 74, 75, 90, 111, 135, 150, 185, 222, 225, 270, 333, 370, 431, 450, 555, 666, 675, 862, 925, 999, 1110, 1293, 1350, 1665, 1850, 1998, 2155, 2586, 2775, 3330, 3879, 4310, 4995, 5550, 6465, 7758, 8325, 9990, 10775, 11637, 12930, 15947, 16650, 19395, 21550, 23274, 24975, 31894, 32325, 38790, 47841, 49950, 58185, 64650, 79735, 95682, 96975, 116370, 143523, 159470, 193950, 239205, 287046, 290925, 398675, 430569, 478410, 581850, 717615, 797350, 861138, 1196025, 1435230, 2152845, 2392050, 3588075, 4305690, 7176150, 10764225, 21528450]

約数ペア:

[(1, 21528450), (2, 10764225), (3, 7176150), (5, 4305690), (6, 3588075), (9, 2392050), (10, 2152845), (15, 1435230), (18, 1196025), (25, 861138), (27, 797350), (30, 717615), (37, 581850), (45, 478410), (50, 430569), (54, 398675), (74, 290925), (75, 287046), (90, 239205), (111, 193950), (135, 159470), (150, 143523), (185, 116370), (222, 96975), (225, 95682), (270, 79735), (333, 64650), (370, 58185), (431, 49950), (450, 47841), (555, 38790), (666, 32325), (675, 31894), (862, 24975), (925, 23274), (999, 21550), (1110, 19395), (1293, 16650), (1350, 15947), (1665, 12930), (1850, 11637), (1998, 10775), (2155, 9990), (2586, 8325), (2775, 7758), (3330, 6465), (3879, 5550), (4310, 4995)]