20690696

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 45326400

約数和(自身を除く): 24635704

約数列:

[1, 2, 4, 8, 13, 19, 26, 37, 38, 52, 74, 76, 104, 148, 152, 247, 283, 296, 481, 494, 566, 703, 962, 988, 1132, 1406, 1924, 1976, 2264, 2812, 3679, 3848, 5377, 5624, 7358, 9139, 10471, 10754, 14716, 18278, 20942, 21508, 29432, 36556, 41884, 43016, 69901, 73112, 83768, 136123, 139802, 198949, 272246, 279604, 397898, 544492, 559208, 795796, 1088984, 1591592, 2586337, 5172674, 10345348, 20690696]

約数ペア:

[(1, 20690696), (2, 10345348), (4, 5172674), (8, 2586337), (13, 1591592), (19, 1088984), (26, 795796), (37, 559208), (38, 544492), (52, 397898), (74, 279604), (76, 272246), (104, 198949), (148, 139802), (152, 136123), (247, 83768), (283, 73112), (296, 69901), (481, 43016), (494, 41884), (566, 36556), (703, 29432), (962, 21508), (988, 20942), (1132, 18278), (1406, 14716), (1924, 10754), (1976, 10471), (2264, 9139), (2812, 7358), (3679, 5624), (3848, 5377)]