31780980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2293}}^1$

素因数の和:2326

約数の個数: 144

約数和(自身を含む): 120242304

約数和(自身を除く): 88461324

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1540, 1980, 2293, 2310, 2772, 3465, 4586, 4620, 6879, 6930, 9172, 11465, 13758, 13860, 16051, 20637, 22930, 25223, 27516, 32102, 34395, 41274, 45860, 48153, 50446, 64204, 68790, 75669, 80255, 82548, 96306, 100892, 103185, 126115, 137580, 144459, 151338, 160510, 176561, 192612, 206370, 227007, 240765, 252230, 288918, 302676, 321020, 353122, 378345, 412740, 454014, 481530, 504460, 529683, 577836, 706244, 722295, 756690, 882805, 908028, 963060, 1059366, 1135035, 1444590, 1513380, 1589049, 1765610, 2118732, 2270070, 2648415, 2889180, 3178098, 3531220, 4540140, 5296830, 6356196, 7945245, 10593660, 15890490, 31780980]

約数ペア:

[(1, 31780980), (2, 15890490), (3, 10593660), (4, 7945245), (5, 6356196), (6, 5296830), (7, 4540140), (9, 3531220), (10, 3178098), (11, 2889180), (12, 2648415), (14, 2270070), (15, 2118732), (18, 1765610), (20, 1589049), (21, 1513380), (22, 1444590), (28, 1135035), (30, 1059366), (33, 963060), (35, 908028), (36, 882805), (42, 756690), (44, 722295), (45, 706244), (55, 577836), (60, 529683), (63, 504460), (66, 481530), (70, 454014), (77, 412740), (84, 378345), (90, 353122), (99, 321020), (105, 302676), (110, 288918), (126, 252230), (132, 240765), (140, 227007), (154, 206370), (165, 192612), (180, 176561), (198, 160510), (210, 151338), (220, 144459), (231, 137580), (252, 126115), (308, 103185), (315, 100892), (330, 96306), (385, 82548), (396, 80255), (420, 75669), (462, 68790), (495, 64204), (630, 50446), (660, 48153), (693, 45860), (770, 41274), (924, 34395), (990, 32102), (1155, 27516), (1260, 25223), (1386, 22930), (1540, 20637), (1980, 16051), (2293, 13860), (2310, 13758), (2772, 11465), (3465, 9172), (4586, 6930), (4620, 6879)]