20854140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 61205760

約数和(自身を除く): 40351620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 59, 60, 86, 118, 129, 137, 172, 177, 215, 236, 258, 274, 295, 354, 411, 430, 516, 548, 590, 645, 685, 708, 822, 860, 885, 1180, 1290, 1370, 1644, 1770, 2055, 2537, 2580, 2740, 3540, 4110, 5074, 5891, 7611, 8083, 8220, 10148, 11782, 12685, 15222, 16166, 17673, 23564, 24249, 25370, 29455, 30444, 32332, 35346, 38055, 40415, 48498, 50740, 58910, 70692, 76110, 80830, 88365, 96996, 117820, 121245, 152220, 161660, 176730, 242490, 347569, 353460, 484980, 695138, 1042707, 1390276, 1737845, 2085414, 3475690, 4170828, 5213535, 6951380, 10427070, 20854140]

約数ペア:

[(1, 20854140), (2, 10427070), (3, 6951380), (4, 5213535), (5, 4170828), (6, 3475690), (10, 2085414), (12, 1737845), (15, 1390276), (20, 1042707), (30, 695138), (43, 484980), (59, 353460), (60, 347569), (86, 242490), (118, 176730), (129, 161660), (137, 152220), (172, 121245), (177, 117820), (215, 96996), (236, 88365), (258, 80830), (274, 76110), (295, 70692), (354, 58910), (411, 50740), (430, 48498), (516, 40415), (548, 38055), (590, 35346), (645, 32332), (685, 30444), (708, 29455), (822, 25370), (860, 24249), (885, 23564), (1180, 17673), (1290, 16166), (1370, 15222), (1644, 12685), (1770, 11782), (2055, 10148), (2537, 8220), (2580, 8083), (2740, 7611), (3540, 5891), (4110, 5074)]