81529020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{419}}^1$

素因数の和:504

約数の個数: 144

約数和(自身を含む): 264176640

約数和(自身を除く): 182647620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 47, 60, 69, 90, 92, 94, 115, 138, 141, 180, 188, 207, 230, 235, 276, 282, 345, 414, 419, 423, 460, 470, 564, 690, 705, 828, 838, 846, 940, 1035, 1081, 1257, 1380, 1410, 1676, 1692, 2070, 2095, 2115, 2162, 2514, 2820, 3243, 3771, 4140, 4190, 4230, 4324, 5028, 5405, 6285, 6486, 7542, 8380, 8460, 9637, 9729, 10810, 12570, 12972, 15084, 16215, 18855, 19274, 19458, 19693, 21620, 25140, 28911, 32430, 37710, 38548, 38916, 39386, 48185, 48645, 57822, 59079, 64860, 75420, 78772, 86733, 96370, 97290, 98465, 115644, 118158, 144555, 173466, 177237, 192740, 194580, 196930, 236316, 289110, 295395, 346932, 354474, 393860, 433665, 452939, 578220, 590790, 708948, 867330, 886185, 905878, 1181580, 1358817, 1734660, 1772370, 1811756, 2264695, 2717634, 3544740, 4076451, 4529390, 5435268, 6794085, 8152902, 9058780, 13588170, 16305804, 20382255, 27176340, 40764510, 81529020]

約数ペア:

[(1, 81529020), (2, 40764510), (3, 27176340), (4, 20382255), (5, 16305804), (6, 13588170), (9, 9058780), (10, 8152902), (12, 6794085), (15, 5435268), (18, 4529390), (20, 4076451), (23, 3544740), (30, 2717634), (36, 2264695), (45, 1811756), (46, 1772370), (47, 1734660), (60, 1358817), (69, 1181580), (90, 905878), (92, 886185), (94, 867330), (115, 708948), (138, 590790), (141, 578220), (180, 452939), (188, 433665), (207, 393860), (230, 354474), (235, 346932), (276, 295395), (282, 289110), (345, 236316), (414, 196930), (419, 194580), (423, 192740), (460, 177237), (470, 173466), (564, 144555), (690, 118158), (705, 115644), (828, 98465), (838, 97290), (846, 96370), (940, 86733), (1035, 78772), (1081, 75420), (1257, 64860), (1380, 59079), (1410, 57822), (1676, 48645), (1692, 48185), (2070, 39386), (2095, 38916), (2115, 38548), (2162, 37710), (2514, 32430), (2820, 28911), (3243, 25140), (3771, 21620), (4140, 19693), (4190, 19458), (4230, 19274), (4324, 18855), (5028, 16215), (5405, 15084), (6285, 12972), (6486, 12570), (7542, 10810), (8380, 9729), (8460, 9637)]