20549700

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:128

約数の個数: 180

約数和(自身を含む): 69318480

約数和(自身を除く): 48768780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 43, 45, 50, 54, 59, 60, 75, 81, 86, 90, 100, 108, 118, 129, 135, 150, 162, 172, 177, 180, 215, 225, 236, 258, 270, 295, 300, 324, 354, 387, 405, 430, 450, 516, 531, 540, 590, 645, 675, 708, 774, 810, 860, 885, 900, 1062, 1075, 1161, 1180, 1290, 1350, 1475, 1548, 1593, 1620, 1770, 1935, 2025, 2124, 2150, 2322, 2537, 2580, 2655, 2700, 2950, 3186, 3225, 3483, 3540, 3870, 4050, 4300, 4425, 4644, 4779, 5074, 5310, 5805, 5900, 6372, 6450, 6966, 7611, 7740, 7965, 8100, 8850, 9558, 9675, 10148, 10620, 11610, 12685, 12900, 13275, 13932, 15222, 15930, 17415, 17700, 19116, 19350, 22833, 23220, 23895, 25370, 26550, 29025, 30444, 31860, 34830, 38055, 38700, 39825, 45666, 47790, 50740, 53100, 58050, 63425, 68499, 69660, 76110, 79650, 87075, 91332, 95580, 114165, 116100, 119475, 126850, 136998, 152220, 159300, 174150, 190275, 205497, 228330, 238950, 253700, 273996, 342495, 348300, 380550, 410994, 456660, 477900, 570825, 684990, 761100, 821988, 1027485, 1141650, 1369980, 1712475, 2054970, 2283300, 3424950, 4109940, 5137425, 6849900, 10274850, 20549700]

約数ペア:

[(1, 20549700), (2, 10274850), (3, 6849900), (4, 5137425), (5, 4109940), (6, 3424950), (9, 2283300), (10, 2054970), (12, 1712475), (15, 1369980), (18, 1141650), (20, 1027485), (25, 821988), (27, 761100), (30, 684990), (36, 570825), (43, 477900), (45, 456660), (50, 410994), (54, 380550), (59, 348300), (60, 342495), (75, 273996), (81, 253700), (86, 238950), (90, 228330), (100, 205497), (108, 190275), (118, 174150), (129, 159300), (135, 152220), (150, 136998), (162, 126850), (172, 119475), (177, 116100), (180, 114165), (215, 95580), (225, 91332), (236, 87075), (258, 79650), (270, 76110), (295, 69660), (300, 68499), (324, 63425), (354, 58050), (387, 53100), (405, 50740), (430, 47790), (450, 45666), (516, 39825), (531, 38700), (540, 38055), (590, 34830), (645, 31860), (675, 30444), (708, 29025), (774, 26550), (810, 25370), (860, 23895), (885, 23220), (900, 22833), (1062, 19350), (1075, 19116), (1161, 17700), (1180, 17415), (1290, 15930), (1350, 15222), (1475, 13932), (1548, 13275), (1593, 12900), (1620, 12685), (1770, 11610), (1935, 10620), (2025, 10148), (2124, 9675), (2150, 9558), (2322, 8850), (2537, 8100), (2580, 7965), (2655, 7740), (2700, 7611), (2950, 6966), (3186, 6450), (3225, 6372), (3483, 5900), (3540, 5805), (3870, 5310), (4050, 5074), (4300, 4779), (4425, 4644)]