19904280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{887}}^1$

素因数の和:929

約数の個数: 128

約数和(自身を含む): 69050880

約数和(自身を除く): 49146600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 17, 20, 22, 24, 30, 33, 34, 40, 44, 51, 55, 60, 66, 68, 85, 88, 102, 110, 120, 132, 136, 165, 170, 187, 204, 220, 255, 264, 330, 340, 374, 408, 440, 510, 561, 660, 680, 748, 887, 935, 1020, 1122, 1320, 1496, 1774, 1870, 2040, 2244, 2661, 2805, 3548, 3740, 4435, 4488, 5322, 5610, 7096, 7480, 8870, 9757, 10644, 11220, 13305, 15079, 17740, 19514, 21288, 22440, 26610, 29271, 30158, 35480, 39028, 45237, 48785, 53220, 58542, 60316, 75395, 78056, 90474, 97570, 106440, 117084, 120632, 146355, 150790, 165869, 180948, 195140, 226185, 234168, 292710, 301580, 331738, 361896, 390280, 452370, 497607, 585420, 603160, 663476, 829345, 904740, 995214, 1170840, 1326952, 1658690, 1809480, 1990428, 2488035, 3317380, 3980856, 4976070, 6634760, 9952140, 19904280]

約数ペア:

[(1, 19904280), (2, 9952140), (3, 6634760), (4, 4976070), (5, 3980856), (6, 3317380), (8, 2488035), (10, 1990428), (11, 1809480), (12, 1658690), (15, 1326952), (17, 1170840), (20, 995214), (22, 904740), (24, 829345), (30, 663476), (33, 603160), (34, 585420), (40, 497607), (44, 452370), (51, 390280), (55, 361896), (60, 331738), (66, 301580), (68, 292710), (85, 234168), (88, 226185), (102, 195140), (110, 180948), (120, 165869), (132, 150790), (136, 146355), (165, 120632), (170, 117084), (187, 106440), (204, 97570), (220, 90474), (255, 78056), (264, 75395), (330, 60316), (340, 58542), (374, 53220), (408, 48785), (440, 45237), (510, 39028), (561, 35480), (660, 30158), (680, 29271), (748, 26610), (887, 22440), (935, 21288), (1020, 19514), (1122, 17740), (1320, 15079), (1496, 13305), (1774, 11220), (1870, 10644), (2040, 9757), (2244, 8870), (2661, 7480), (2805, 7096), (3548, 5610), (3740, 5322), (4435, 4488)]