21509648260

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1\times {\mathrm{64013}}^1$

素因数の和:64392

約数の個数: 48

約数和(自身を含む): 46168433136

約数和(自身を除く): 24658784876

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 317, 530, 634, 1060, 1268, 1585, 3170, 6340, 16801, 33602, 64013, 67204, 84005, 128026, 168010, 256052, 320065, 336020, 640130, 1280260, 3392689, 6785378, 13570756, 16963445, 20292121, 33926890, 40584242, 67853780, 81168484, 101460605, 202921210, 405842420, 1075482413, 2150964826, 4301929652, 5377412065, 10754824130, 21509648260]

約数ペア:

[(1, 21509648260), (2, 10754824130), (4, 5377412065), (5, 4301929652), (10, 2150964826), (20, 1075482413), (53, 405842420), (106, 202921210), (212, 101460605), (265, 81168484), (317, 67853780), (530, 40584242), (634, 33926890), (1060, 20292121), (1268, 16963445), (1585, 13570756), (3170, 6785378), (6340, 3392689), (16801, 1280260), (33602, 640130), (64013, 336020), (67204, 320065), (84005, 256052), (128026, 168010)]