21820590

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:140

約数の個数: 160

約数和(自身を含む): 66908160

約数和(自身を除く): 45087570

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 31, 33, 45, 54, 55, 62, 66, 79, 81, 90, 93, 99, 110, 135, 155, 158, 162, 165, 186, 198, 237, 270, 279, 297, 310, 330, 341, 395, 405, 465, 474, 495, 558, 594, 682, 711, 790, 810, 837, 869, 891, 930, 990, 1023, 1185, 1395, 1422, 1485, 1674, 1705, 1738, 1782, 2046, 2133, 2370, 2449, 2511, 2607, 2790, 2970, 3069, 3410, 3555, 4185, 4266, 4345, 4455, 4898, 5022, 5115, 5214, 6138, 6399, 7110, 7347, 7821, 8370, 8690, 8910, 9207, 10230, 10665, 12245, 12555, 12798, 13035, 14694, 15345, 15642, 18414, 21330, 22041, 23463, 24490, 25110, 26070, 26939, 27621, 30690, 31995, 36735, 39105, 44082, 46035, 46926, 53878, 55242, 63990, 66123, 70389, 73470, 78210, 80817, 92070, 110205, 117315, 132246, 134695, 138105, 140778, 161634, 198369, 220410, 234630, 242451, 269390, 276210, 330615, 351945, 396738, 404085, 484902, 661230, 703890, 727353, 808170, 991845, 1212255, 1454706, 1983690, 2182059, 2424510, 3636765, 4364118, 7273530, 10910295, 21820590]

約数ペア:

[(1, 21820590), (2, 10910295), (3, 7273530), (5, 4364118), (6, 3636765), (9, 2424510), (10, 2182059), (11, 1983690), (15, 1454706), (18, 1212255), (22, 991845), (27, 808170), (30, 727353), (31, 703890), (33, 661230), (45, 484902), (54, 404085), (55, 396738), (62, 351945), (66, 330615), (79, 276210), (81, 269390), (90, 242451), (93, 234630), (99, 220410), (110, 198369), (135, 161634), (155, 140778), (158, 138105), (162, 134695), (165, 132246), (186, 117315), (198, 110205), (237, 92070), (270, 80817), (279, 78210), (297, 73470), (310, 70389), (330, 66123), (341, 63990), (395, 55242), (405, 53878), (465, 46926), (474, 46035), (495, 44082), (558, 39105), (594, 36735), (682, 31995), (711, 30690), (790, 27621), (810, 26939), (837, 26070), (869, 25110), (891, 24490), (930, 23463), (990, 22041), (1023, 21330), (1185, 18414), (1395, 15642), (1422, 15345), (1485, 14694), (1674, 13035), (1705, 12798), (1738, 12555), (1782, 12245), (2046, 10665), (2133, 10230), (2370, 9207), (2449, 8910), (2511, 8690), (2607, 8370), (2790, 7821), (2970, 7347), (3069, 7110), (3410, 6399), (3555, 6138), (4185, 5214), (4266, 5115), (4345, 5022), (4455, 4898)]