20691900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{277}}^1$

素因数の和:380

約数の個数: 108

約数和(自身を含む): 65875992

約数和(自身を除く): 45184092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 83, 90, 100, 150, 166, 180, 225, 249, 277, 300, 332, 415, 450, 498, 554, 747, 830, 831, 900, 996, 1108, 1245, 1385, 1494, 1660, 1662, 2075, 2490, 2493, 2770, 2988, 3324, 3735, 4150, 4155, 4980, 4986, 5540, 6225, 6925, 7470, 8300, 8310, 9972, 12450, 12465, 13850, 14940, 16620, 18675, 20775, 22991, 24900, 24930, 27700, 37350, 41550, 45982, 49860, 62325, 68973, 74700, 83100, 91964, 114955, 124650, 137946, 206919, 229910, 249300, 275892, 344865, 413838, 459820, 574775, 689730, 827676, 1034595, 1149550, 1379460, 1724325, 2069190, 2299100, 3448650, 4138380, 5172975, 6897300, 10345950, 20691900]

約数ペア:

[(1, 20691900), (2, 10345950), (3, 6897300), (4, 5172975), (5, 4138380), (6, 3448650), (9, 2299100), (10, 2069190), (12, 1724325), (15, 1379460), (18, 1149550), (20, 1034595), (25, 827676), (30, 689730), (36, 574775), (45, 459820), (50, 413838), (60, 344865), (75, 275892), (83, 249300), (90, 229910), (100, 206919), (150, 137946), (166, 124650), (180, 114955), (225, 91964), (249, 83100), (277, 74700), (300, 68973), (332, 62325), (415, 49860), (450, 45982), (498, 41550), (554, 37350), (747, 27700), (830, 24930), (831, 24900), (900, 22991), (996, 20775), (1108, 18675), (1245, 16620), (1385, 14940), (1494, 13850), (1660, 12465), (1662, 12450), (2075, 9972), (2490, 8310), (2493, 8300), (2770, 7470), (2988, 6925), (3324, 6225), (3735, 5540), (4150, 4986), (4155, 4980)]