21285258

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 48356352

約数和(自身を除く): 27071094

約数列:

[1, 2, 3, 6, 17, 23, 34, 43, 46, 51, 69, 86, 102, 129, 138, 211, 258, 391, 422, 633, 731, 782, 989, 1173, 1266, 1462, 1978, 2193, 2346, 2967, 3587, 4386, 4853, 5934, 7174, 9073, 9706, 10761, 14559, 16813, 18146, 21522, 27219, 29118, 33626, 50439, 54438, 82501, 100878, 154241, 165002, 208679, 247503, 308482, 417358, 462723, 495006, 626037, 925446, 1252074, 3547543, 7095086, 10642629, 21285258]

約数ペア:

[(1, 21285258), (2, 10642629), (3, 7095086), (6, 3547543), (17, 1252074), (23, 925446), (34, 626037), (43, 495006), (46, 462723), (51, 417358), (69, 308482), (86, 247503), (102, 208679), (129, 165002), (138, 154241), (211, 100878), (258, 82501), (391, 54438), (422, 50439), (633, 33626), (731, 29118), (782, 27219), (989, 21522), (1173, 18146), (1266, 16813), (1462, 14559), (1978, 10761), (2193, 9706), (2346, 9073), (2967, 7174), (3587, 5934), (4386, 4853)]