20548920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1439}}^1$

素因数の和:1477

約数の個数: 128

約数和(自身を含む): 74649600

約数和(自身を除く): 54100680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 102, 105, 119, 120, 136, 140, 168, 170, 204, 210, 238, 255, 280, 340, 357, 408, 420, 476, 510, 595, 680, 714, 840, 952, 1020, 1190, 1428, 1439, 1785, 2040, 2380, 2856, 2878, 3570, 4317, 4760, 5756, 7140, 7195, 8634, 10073, 11512, 14280, 14390, 17268, 20146, 21585, 24463, 28780, 30219, 34536, 40292, 43170, 48926, 50365, 57560, 60438, 73389, 80584, 86340, 97852, 100730, 120876, 122315, 146778, 151095, 171241, 172680, 195704, 201460, 241752, 244630, 293556, 302190, 342482, 366945, 402920, 489260, 513723, 587112, 604380, 684964, 733890, 856205, 978520, 1027446, 1208760, 1369928, 1467780, 1712410, 2054892, 2568615, 2935560, 3424820, 4109784, 5137230, 6849640, 10274460, 20548920]

約数ペア:

[(1, 20548920), (2, 10274460), (3, 6849640), (4, 5137230), (5, 4109784), (6, 3424820), (7, 2935560), (8, 2568615), (10, 2054892), (12, 1712410), (14, 1467780), (15, 1369928), (17, 1208760), (20, 1027446), (21, 978520), (24, 856205), (28, 733890), (30, 684964), (34, 604380), (35, 587112), (40, 513723), (42, 489260), (51, 402920), (56, 366945), (60, 342482), (68, 302190), (70, 293556), (84, 244630), (85, 241752), (102, 201460), (105, 195704), (119, 172680), (120, 171241), (136, 151095), (140, 146778), (168, 122315), (170, 120876), (204, 100730), (210, 97852), (238, 86340), (255, 80584), (280, 73389), (340, 60438), (357, 57560), (408, 50365), (420, 48926), (476, 43170), (510, 40292), (595, 34536), (680, 30219), (714, 28780), (840, 24463), (952, 21585), (1020, 20146), (1190, 17268), (1428, 14390), (1439, 14280), (1785, 11512), (2040, 10073), (2380, 8634), (2856, 7195), (2878, 7140), (3570, 5756), (4317, 4760)]