21195792

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:221

約数の個数: 120

約数和(自身を含む): 63964160

約数和(自身を除く): 42768368

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 61, 72, 76, 114, 122, 127, 144, 152, 171, 183, 228, 244, 254, 304, 342, 366, 381, 456, 488, 508, 549, 684, 732, 762, 912, 976, 1016, 1098, 1143, 1159, 1368, 1464, 1524, 2032, 2196, 2286, 2318, 2413, 2736, 2928, 3048, 3477, 4392, 4572, 4636, 4826, 6096, 6954, 7239, 7747, 8784, 9144, 9272, 9652, 10431, 13908, 14478, 15494, 18288, 18544, 19304, 20862, 21717, 23241, 27816, 28956, 30988, 38608, 41724, 43434, 46482, 55632, 57912, 61976, 69723, 83448, 86868, 92964, 115824, 123952, 139446, 147193, 166896, 173736, 185928, 278892, 294386, 347472, 371856, 441579, 557784, 588772, 883158, 1115568, 1177544, 1324737, 1766316, 2355088, 2649474, 3532632, 5298948, 7065264, 10597896, 21195792]

約数ペア:

[(1, 21195792), (2, 10597896), (3, 7065264), (4, 5298948), (6, 3532632), (8, 2649474), (9, 2355088), (12, 1766316), (16, 1324737), (18, 1177544), (19, 1115568), (24, 883158), (36, 588772), (38, 557784), (48, 441579), (57, 371856), (61, 347472), (72, 294386), (76, 278892), (114, 185928), (122, 173736), (127, 166896), (144, 147193), (152, 139446), (171, 123952), (183, 115824), (228, 92964), (244, 86868), (254, 83448), (304, 69723), (342, 61976), (366, 57912), (381, 55632), (456, 46482), (488, 43434), (508, 41724), (549, 38608), (684, 30988), (732, 28956), (762, 27816), (912, 23241), (976, 21717), (1016, 20862), (1098, 19304), (1143, 18544), (1159, 18288), (1368, 15494), (1464, 14478), (1524, 13908), (2032, 10431), (2196, 9652), (2286, 9272), (2318, 9144), (2413, 8784), (2736, 7747), (2928, 7239), (3048, 6954), (3477, 6096), (4392, 4826), (4572, 4636)]