20916840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{673}}^1$

素因数の和:731

約数の個数: 128

約数和(自身を含む): 73762560

約数和(自身を除く): 52845720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 673, 740, 777, 840, 888, 1036, 1110, 1295, 1346, 1480, 1554, 2019, 2072, 2220, 2590, 2692, 3108, 3365, 3885, 4038, 4440, 4711, 5180, 5384, 6216, 6730, 7770, 8076, 9422, 10095, 10360, 13460, 14133, 15540, 16152, 18844, 20190, 23555, 24901, 26920, 28266, 31080, 37688, 40380, 47110, 49802, 56532, 70665, 74703, 80760, 94220, 99604, 113064, 124505, 141330, 149406, 174307, 188440, 199208, 249010, 282660, 298812, 348614, 373515, 498020, 522921, 565320, 597624, 697228, 747030, 871535, 996040, 1045842, 1394456, 1494060, 1743070, 2091684, 2614605, 2988120, 3486140, 4183368, 5229210, 6972280, 10458420, 20916840]

約数ペア:

[(1, 20916840), (2, 10458420), (3, 6972280), (4, 5229210), (5, 4183368), (6, 3486140), (7, 2988120), (8, 2614605), (10, 2091684), (12, 1743070), (14, 1494060), (15, 1394456), (20, 1045842), (21, 996040), (24, 871535), (28, 747030), (30, 697228), (35, 597624), (37, 565320), (40, 522921), (42, 498020), (56, 373515), (60, 348614), (70, 298812), (74, 282660), (84, 249010), (105, 199208), (111, 188440), (120, 174307), (140, 149406), (148, 141330), (168, 124505), (185, 113064), (210, 99604), (222, 94220), (259, 80760), (280, 74703), (296, 70665), (370, 56532), (420, 49802), (444, 47110), (518, 40380), (555, 37688), (673, 31080), (740, 28266), (777, 26920), (840, 24901), (888, 23555), (1036, 20190), (1110, 18844), (1295, 16152), (1346, 15540), (1480, 14133), (1554, 13460), (2019, 10360), (2072, 10095), (2220, 9422), (2590, 8076), (2692, 7770), (3108, 6730), (3365, 6216), (3885, 5384), (4038, 5180), (4440, 4711)]