21195853826

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{47459}}^1$

素因数の和:47583

約数の個数: 64

約数和(自身を含む): 40458700800

約数和(自身を除く): 19262846974

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 73, 133, 146, 161, 266, 322, 437, 511, 874, 1022, 1387, 1679, 2774, 3059, 3358, 6118, 9709, 11753, 19418, 23506, 31901, 47459, 63802, 94918, 223307, 332213, 446614, 664426, 901721, 1091557, 1803442, 2183114, 3464507, 6312047, 6929014, 7640899, 12624094, 15281798, 20739583, 24251549, 41479166, 48503098, 65825633, 79683661, 131651266, 145177081, 159367322, 290354162, 460779431, 557785627, 921558862, 1115571254, 1513989559, 3027979118, 10597926913, 21195853826]

約数ペア:

[(1, 21195853826), (2, 10597926913), (7, 3027979118), (14, 1513989559), (19, 1115571254), (23, 921558862), (38, 557785627), (46, 460779431), (73, 290354162), (133, 159367322), (146, 145177081), (161, 131651266), (266, 79683661), (322, 65825633), (437, 48503098), (511, 41479166), (874, 24251549), (1022, 20739583), (1387, 15281798), (1679, 12624094), (2774, 7640899), (3059, 6929014), (3358, 6312047), (6118, 3464507), (9709, 2183114), (11753, 1803442), (19418, 1091557), (23506, 901721), (31901, 664426), (47459, 446614), (63802, 332213), (94918, 223307)]