21345381280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{369553}}^1$

素因数の和:369606

約数の個数: 72

約数和(自身を含む): 53222427972

約数和(自身を除く): 31877046692

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 361, 380, 608, 722, 760, 1444, 1520, 1805, 2888, 3040, 3610, 5776, 7220, 11552, 14440, 28880, 57760, 369553, 739106, 1478212, 1847765, 2956424, 3695530, 5912848, 7021507, 7391060, 11825696, 14043014, 14782120, 28086028, 29564240, 35107535, 56172056, 59128480, 70215070, 112344112, 133408633, 140430140, 224688224, 266817266, 280860280, 533634532, 561720560, 667043165, 1067269064, 1123441120, 1334086330, 2134538128, 2668172660, 4269076256, 5336345320, 10672690640, 21345381280]

約数ペア:

[(1, 21345381280), (2, 10672690640), (4, 5336345320), (5, 4269076256), (8, 2668172660), (10, 2134538128), (16, 1334086330), (19, 1123441120), (20, 1067269064), (32, 667043165), (38, 561720560), (40, 533634532), (76, 280860280), (80, 266817266), (95, 224688224), (152, 140430140), (160, 133408633), (190, 112344112), (304, 70215070), (361, 59128480), (380, 56172056), (608, 35107535), (722, 29564240), (760, 28086028), (1444, 14782120), (1520, 14043014), (1805, 11825696), (2888, 7391060), (3040, 7021507), (3610, 5912848), (5776, 3695530), (7220, 2956424), (11552, 1847765), (14440, 1478212), (28880, 739106), (57760, 369553)]