21620025

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 108

約数和(自身を含む): 47136492

約数和(自身を除く): 25516467

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 37, 45, 49, 53, 63, 75, 105, 111, 147, 159, 175, 185, 225, 245, 259, 265, 315, 333, 371, 441, 477, 525, 555, 735, 777, 795, 925, 1113, 1225, 1295, 1325, 1575, 1665, 1813, 1855, 1961, 2205, 2331, 2385, 2597, 2775, 3339, 3675, 3885, 3975, 5439, 5565, 5883, 6475, 7791, 8325, 9065, 9275, 9805, 11025, 11655, 11925, 12985, 13727, 16317, 16695, 17649, 19425, 23373, 27195, 27825, 29415, 38955, 41181, 45325, 49025, 58275, 64925, 68635, 81585, 83475, 88245, 96089, 116865, 123543, 135975, 147075, 194775, 205905, 288267, 343175, 407925, 441225, 480445, 584325, 617715, 864801, 1029525, 1441335, 2402225, 3088575, 4324005, 7206675, 21620025]

約数ペア:

[(1, 21620025), (3, 7206675), (5, 4324005), (7, 3088575), (9, 2402225), (15, 1441335), (21, 1029525), (25, 864801), (35, 617715), (37, 584325), (45, 480445), (49, 441225), (53, 407925), (63, 343175), (75, 288267), (105, 205905), (111, 194775), (147, 147075), (159, 135975), (175, 123543), (185, 116865), (225, 96089), (245, 88245), (259, 83475), (265, 81585), (315, 68635), (333, 64925), (371, 58275), (441, 49025), (477, 45325), (525, 41181), (555, 38955), (735, 29415), (777, 27825), (795, 27195), (925, 23373), (1113, 19425), (1225, 17649), (1295, 16695), (1325, 16317), (1575, 13727), (1665, 12985), (1813, 11925), (1855, 11655), (1961, 11025), (2205, 9805), (2331, 9275), (2385, 9065), (2597, 8325), (2775, 7791), (3339, 6475), (3675, 5883), (3885, 5565), (3975, 5439)]