201511720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:323

約数の個数: 128

約数和(自身を含む): 508032000

約数和(自身を除く): 306520280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 41, 58, 76, 82, 95, 116, 145, 152, 164, 190, 205, 223, 232, 290, 328, 380, 410, 446, 551, 580, 760, 779, 820, 892, 1102, 1115, 1160, 1189, 1558, 1640, 1784, 2204, 2230, 2378, 2755, 3116, 3895, 4237, 4408, 4460, 4756, 5510, 5945, 6232, 6467, 7790, 8474, 8920, 9143, 9512, 11020, 11890, 12934, 15580, 16948, 18286, 21185, 22040, 22591, 23780, 25868, 31160, 32335, 33896, 36572, 42370, 45182, 45715, 47560, 51736, 64670, 73144, 84740, 90364, 91430, 112955, 122873, 129340, 169480, 173717, 180728, 182860, 225910, 245746, 258680, 265147, 347434, 365720, 451820, 491492, 530294, 614365, 694868, 868585, 903640, 982984, 1060588, 1228730, 1325735, 1389736, 1737170, 2121176, 2457460, 2651470, 3474340, 4914920, 5037793, 5302940, 6948680, 10075586, 10605880, 20151172, 25188965, 40302344, 50377930, 100755860, 201511720]

約数ペア:

[(1, 201511720), (2, 100755860), (4, 50377930), (5, 40302344), (8, 25188965), (10, 20151172), (19, 10605880), (20, 10075586), (29, 6948680), (38, 5302940), (40, 5037793), (41, 4914920), (58, 3474340), (76, 2651470), (82, 2457460), (95, 2121176), (116, 1737170), (145, 1389736), (152, 1325735), (164, 1228730), (190, 1060588), (205, 982984), (223, 903640), (232, 868585), (290, 694868), (328, 614365), (380, 530294), (410, 491492), (446, 451820), (551, 365720), (580, 347434), (760, 265147), (779, 258680), (820, 245746), (892, 225910), (1102, 182860), (1115, 180728), (1160, 173717), (1189, 169480), (1558, 129340), (1640, 122873), (1784, 112955), (2204, 91430), (2230, 90364), (2378, 84740), (2755, 73144), (3116, 64670), (3895, 51736), (4237, 47560), (4408, 45715), (4460, 45182), (4756, 42370), (5510, 36572), (5945, 33896), (6232, 32335), (6467, 31160), (7790, 25868), (8474, 23780), (8920, 22591), (9143, 22040), (9512, 21185), (11020, 18286), (11890, 16948), (12934, 15580)]