21189900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 66495744

約数和(自身を除く): 45305844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 25, 30, 37, 46, 50, 60, 69, 74, 75, 83, 92, 100, 111, 115, 138, 148, 150, 166, 185, 222, 230, 249, 276, 300, 332, 345, 370, 415, 444, 460, 498, 555, 575, 690, 740, 830, 851, 925, 996, 1110, 1150, 1245, 1380, 1660, 1702, 1725, 1850, 1909, 2075, 2220, 2300, 2490, 2553, 2775, 3071, 3404, 3450, 3700, 3818, 4150, 4255, 4980, 5106, 5550, 5727, 6142, 6225, 6900, 7636, 8300, 8510, 9213, 9545, 10212, 11100, 11454, 12284, 12450, 12765, 15355, 17020, 18426, 19090, 21275, 22908, 24900, 25530, 28635, 30710, 36852, 38180, 42550, 46065, 47725, 51060, 57270, 61420, 63825, 70633, 76775, 85100, 92130, 95450, 114540, 127650, 141266, 143175, 153550, 184260, 190900, 211899, 230325, 255300, 282532, 286350, 307100, 353165, 423798, 460650, 572700, 706330, 847596, 921300, 1059495, 1412660, 1765825, 2118990, 3531650, 4237980, 5297475, 7063300, 10594950, 21189900]

約数ペア:

[(1, 21189900), (2, 10594950), (3, 7063300), (4, 5297475), (5, 4237980), (6, 3531650), (10, 2118990), (12, 1765825), (15, 1412660), (20, 1059495), (23, 921300), (25, 847596), (30, 706330), (37, 572700), (46, 460650), (50, 423798), (60, 353165), (69, 307100), (74, 286350), (75, 282532), (83, 255300), (92, 230325), (100, 211899), (111, 190900), (115, 184260), (138, 153550), (148, 143175), (150, 141266), (166, 127650), (185, 114540), (222, 95450), (230, 92130), (249, 85100), (276, 76775), (300, 70633), (332, 63825), (345, 61420), (370, 57270), (415, 51060), (444, 47725), (460, 46065), (498, 42550), (555, 38180), (575, 36852), (690, 30710), (740, 28635), (830, 25530), (851, 24900), (925, 22908), (996, 21275), (1110, 19090), (1150, 18426), (1245, 17020), (1380, 15355), (1660, 12765), (1702, 12450), (1725, 12284), (1850, 11454), (1909, 11100), (2075, 10212), (2220, 9545), (2300, 9213), (2490, 8510), (2553, 8300), (2775, 7636), (3071, 6900), (3404, 6225), (3450, 6142), (3700, 5727), (3818, 5550), (4150, 5106), (4255, 4980)]