19984712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23560888

約数列:

[1, 2, 4, 8, 11, 22, 29, 41, 44, 58, 82, 88, 116, 164, 191, 232, 319, 328, 382, 451, 638, 764, 902, 1189, 1276, 1528, 1804, 2101, 2378, 2552, 3608, 4202, 4756, 5539, 7831, 8404, 9512, 11078, 13079, 15662, 16808, 22156, 26158, 31324, 44312, 52316, 60929, 62648, 86141, 104632, 121858, 172282, 227099, 243716, 344564, 454198, 487432, 689128, 908396, 1816792, 2498089, 4996178, 9992356, 19984712]

約数ペア:

[(1, 19984712), (2, 9992356), (4, 4996178), (8, 2498089), (11, 1816792), (22, 908396), (29, 689128), (41, 487432), (44, 454198), (58, 344564), (82, 243716), (88, 227099), (116, 172282), (164, 121858), (191, 104632), (232, 86141), (319, 62648), (328, 60929), (382, 52316), (451, 44312), (638, 31324), (764, 26158), (902, 22156), (1189, 16808), (1276, 15662), (1528, 13079), (1804, 11078), (2101, 9512), (2378, 8404), (2552, 7831), (3608, 5539), (4202, 4756)]