20534640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{719}}^1$

素因数の和:759

約数の個数: 160

約数和(自身を含む): 77137920

約数和(自身を除く): 56603280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 51, 56, 60, 68, 70, 80, 84, 85, 102, 105, 112, 119, 120, 136, 140, 168, 170, 204, 210, 238, 240, 255, 272, 280, 336, 340, 357, 408, 420, 476, 510, 560, 595, 680, 714, 719, 816, 840, 952, 1020, 1190, 1360, 1428, 1438, 1680, 1785, 1904, 2040, 2157, 2380, 2856, 2876, 3570, 3595, 4080, 4314, 4760, 5033, 5712, 5752, 7140, 7190, 8628, 9520, 10066, 10785, 11504, 12223, 14280, 14380, 15099, 17256, 20132, 21570, 24446, 25165, 28560, 28760, 30198, 34512, 36669, 40264, 43140, 48892, 50330, 57520, 60396, 61115, 73338, 75495, 80528, 85561, 86280, 97784, 100660, 120792, 122230, 146676, 150990, 171122, 172560, 183345, 195568, 201320, 241584, 244460, 256683, 293352, 301980, 342244, 366690, 402640, 427805, 488920, 513366, 586704, 603960, 684488, 733380, 855610, 977840, 1026732, 1207920, 1283415, 1368976, 1466760, 1711220, 2053464, 2566830, 2933520, 3422440, 4106928, 5133660, 6844880, 10267320, 20534640]

約数ペア:

[(1, 20534640), (2, 10267320), (3, 6844880), (4, 5133660), (5, 4106928), (6, 3422440), (7, 2933520), (8, 2566830), (10, 2053464), (12, 1711220), (14, 1466760), (15, 1368976), (16, 1283415), (17, 1207920), (20, 1026732), (21, 977840), (24, 855610), (28, 733380), (30, 684488), (34, 603960), (35, 586704), (40, 513366), (42, 488920), (48, 427805), (51, 402640), (56, 366690), (60, 342244), (68, 301980), (70, 293352), (80, 256683), (84, 244460), (85, 241584), (102, 201320), (105, 195568), (112, 183345), (119, 172560), (120, 171122), (136, 150990), (140, 146676), (168, 122230), (170, 120792), (204, 100660), (210, 97784), (238, 86280), (240, 85561), (255, 80528), (272, 75495), (280, 73338), (336, 61115), (340, 60396), (357, 57520), (408, 50330), (420, 48892), (476, 43140), (510, 40264), (560, 36669), (595, 34512), (680, 30198), (714, 28760), (719, 28560), (816, 25165), (840, 24446), (952, 21570), (1020, 20132), (1190, 17256), (1360, 15099), (1428, 14380), (1438, 14280), (1680, 12223), (1785, 11504), (1904, 10785), (2040, 10066), (2157, 9520), (2380, 8628), (2856, 7190), (2876, 7140), (3570, 5752), (3595, 5712), (4080, 5033), (4314, 4760)]