8309420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 20779920

約数和(自身を除く): 12470500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 139, 140, 196, 244, 245, 278, 305, 427, 490, 556, 610, 695, 854, 973, 980, 1220, 1390, 1708, 1946, 2135, 2780, 2989, 3892, 4270, 4865, 5978, 6811, 8479, 8540, 9730, 11956, 13622, 14945, 16958, 19460, 27244, 29890, 33916, 34055, 42395, 59353, 59780, 68110, 84790, 118706, 136220, 169580, 237412, 296765, 415471, 593530, 830942, 1187060, 1661884, 2077355, 4154710, 8309420]

約数ペア:

[(1, 8309420), (2, 4154710), (4, 2077355), (5, 1661884), (7, 1187060), (10, 830942), (14, 593530), (20, 415471), (28, 296765), (35, 237412), (49, 169580), (61, 136220), (70, 118706), (98, 84790), (122, 68110), (139, 59780), (140, 59353), (196, 42395), (244, 34055), (245, 33916), (278, 29890), (305, 27244), (427, 19460), (490, 16958), (556, 14945), (610, 13622), (695, 11956), (854, 9730), (973, 8540), (980, 8479), (1220, 6811), (1390, 5978), (1708, 4865), (1946, 4270), (2135, 3892), (2780, 2989)]