21523920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:321

約数の個数: 160

約数和(自身を含む): 75423744

約数和(自身を除く): 53899824

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 33, 40, 44, 48, 55, 60, 62, 66, 80, 88, 93, 110, 120, 124, 132, 155, 165, 176, 186, 220, 240, 248, 263, 264, 310, 330, 341, 372, 440, 465, 496, 526, 528, 620, 660, 682, 744, 789, 880, 930, 1023, 1052, 1240, 1315, 1320, 1364, 1488, 1578, 1705, 1860, 2046, 2104, 2480, 2630, 2640, 2728, 2893, 3156, 3410, 3720, 3945, 4092, 4208, 5115, 5260, 5456, 5786, 6312, 6820, 7440, 7890, 8153, 8184, 8679, 10230, 10520, 11572, 12624, 13640, 14465, 15780, 16306, 16368, 17358, 20460, 21040, 23144, 24459, 27280, 28930, 31560, 32612, 34716, 40765, 40920, 43395, 46288, 48918, 57860, 63120, 65224, 69432, 81530, 81840, 86790, 89683, 97836, 115720, 122295, 130448, 138864, 163060, 173580, 179366, 195672, 231440, 244590, 269049, 326120, 347160, 358732, 391344, 448415, 489180, 538098, 652240, 694320, 717464, 896830, 978360, 1076196, 1345245, 1434928, 1793660, 1956720, 2152392, 2690490, 3587320, 4304784, 5380980, 7174640, 10761960, 21523920]

約数ペア:

[(1, 21523920), (2, 10761960), (3, 7174640), (4, 5380980), (5, 4304784), (6, 3587320), (8, 2690490), (10, 2152392), (11, 1956720), (12, 1793660), (15, 1434928), (16, 1345245), (20, 1076196), (22, 978360), (24, 896830), (30, 717464), (31, 694320), (33, 652240), (40, 538098), (44, 489180), (48, 448415), (55, 391344), (60, 358732), (62, 347160), (66, 326120), (80, 269049), (88, 244590), (93, 231440), (110, 195672), (120, 179366), (124, 173580), (132, 163060), (155, 138864), (165, 130448), (176, 122295), (186, 115720), (220, 97836), (240, 89683), (248, 86790), (263, 81840), (264, 81530), (310, 69432), (330, 65224), (341, 63120), (372, 57860), (440, 48918), (465, 46288), (496, 43395), (526, 40920), (528, 40765), (620, 34716), (660, 32612), (682, 31560), (744, 28930), (789, 27280), (880, 24459), (930, 23144), (1023, 21040), (1052, 20460), (1240, 17358), (1315, 16368), (1320, 16306), (1364, 15780), (1488, 14465), (1578, 13640), (1705, 12624), (1860, 11572), (2046, 10520), (2104, 10230), (2480, 8679), (2630, 8184), (2640, 8153), (2728, 7890), (2893, 7440), (3156, 6820), (3410, 6312), (3720, 5786), (3945, 5456), (4092, 5260), (4208, 5115)]