81007740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:440

約数の個数: 144

約数和(自身を含む): 270781056

約数和(自身を除く): 189773316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 163, 165, 180, 198, 220, 251, 326, 330, 396, 489, 495, 502, 652, 660, 753, 815, 978, 990, 1004, 1255, 1467, 1506, 1630, 1793, 1956, 1980, 2259, 2445, 2510, 2761, 2934, 3012, 3260, 3586, 3765, 4518, 4890, 5020, 5379, 5522, 5868, 7172, 7335, 7530, 8283, 8965, 9036, 9780, 10758, 11044, 11295, 13805, 14670, 15060, 16137, 16566, 17930, 21516, 22590, 24849, 26895, 27610, 29340, 32274, 33132, 35860, 40913, 41415, 45180, 49698, 53790, 55220, 64548, 80685, 81826, 82830, 99396, 107580, 122739, 124245, 161370, 163652, 165660, 204565, 245478, 248490, 322740, 368217, 409130, 450043, 490956, 496980, 613695, 736434, 818260, 900086, 1227390, 1350129, 1472868, 1800172, 1841085, 2250215, 2454780, 2700258, 3682170, 4050387, 4500430, 5400516, 6750645, 7364340, 8100774, 9000860, 13501290, 16201548, 20251935, 27002580, 40503870, 81007740]

約数ペア:

[(1, 81007740), (2, 40503870), (3, 27002580), (4, 20251935), (5, 16201548), (6, 13501290), (9, 9000860), (10, 8100774), (11, 7364340), (12, 6750645), (15, 5400516), (18, 4500430), (20, 4050387), (22, 3682170), (30, 2700258), (33, 2454780), (36, 2250215), (44, 1841085), (45, 1800172), (55, 1472868), (60, 1350129), (66, 1227390), (90, 900086), (99, 818260), (110, 736434), (132, 613695), (163, 496980), (165, 490956), (180, 450043), (198, 409130), (220, 368217), (251, 322740), (326, 248490), (330, 245478), (396, 204565), (489, 165660), (495, 163652), (502, 161370), (652, 124245), (660, 122739), (753, 107580), (815, 99396), (978, 82830), (990, 81826), (1004, 80685), (1255, 64548), (1467, 55220), (1506, 53790), (1630, 49698), (1793, 45180), (1956, 41415), (1980, 40913), (2259, 35860), (2445, 33132), (2510, 32274), (2761, 29340), (2934, 27610), (3012, 26895), (3260, 24849), (3586, 22590), (3765, 21516), (4518, 17930), (4890, 16566), (5020, 16137), (5379, 15060), (5522, 14670), (5868, 13805), (7172, 11295), (7335, 11044), (7530, 10758), (8283, 9780), (8965, 9036)]