21929648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 28067152

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 38, 52, 62, 76, 104, 124, 152, 179, 208, 247, 248, 304, 358, 403, 494, 496, 589, 716, 806, 988, 1178, 1432, 1612, 1976, 2327, 2356, 2864, 3224, 3401, 3952, 4654, 4712, 5549, 6448, 6802, 7657, 9308, 9424, 11098, 13604, 15314, 18616, 22196, 27208, 30628, 37232, 44213, 44392, 54416, 61256, 72137, 88426, 88784, 105431, 122512, 144274, 176852, 210862, 288548, 353704, 421724, 577096, 707408, 843448, 1154192, 1370603, 1686896, 2741206, 5482412, 10964824, 21929648]

約数ペア:

[(1, 21929648), (2, 10964824), (4, 5482412), (8, 2741206), (13, 1686896), (16, 1370603), (19, 1154192), (26, 843448), (31, 707408), (38, 577096), (52, 421724), (62, 353704), (76, 288548), (104, 210862), (124, 176852), (152, 144274), (179, 122512), (208, 105431), (247, 88784), (248, 88426), (304, 72137), (358, 61256), (403, 54416), (494, 44392), (496, 44213), (589, 37232), (716, 30628), (806, 27208), (988, 22196), (1178, 18616), (1432, 15314), (1612, 13604), (1976, 11098), (2327, 9424), (2356, 9308), (2864, 7657), (3224, 6802), (3401, 6448), (3952, 5549), (4654, 4712)]