19884800

素因数分解:

$2^8\times 5^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:278

約数の個数: 108

約数和(自身を含む): 53225760

約数和(自身を除く): 33340960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 239, 256, 260, 320, 325, 400, 416, 478, 520, 640, 650, 800, 832, 956, 1040, 1195, 1280, 1300, 1600, 1664, 1912, 2080, 2390, 2600, 3107, 3200, 3328, 3824, 4160, 4780, 5200, 5975, 6214, 6400, 7648, 8320, 9560, 10400, 11950, 12428, 15296, 15535, 16640, 19120, 20800, 23900, 24856, 30592, 31070, 38240, 41600, 47800, 49712, 61184, 62140, 76480, 77675, 83200, 95600, 99424, 124280, 152960, 155350, 191200, 198848, 248560, 305920, 310700, 382400, 397696, 497120, 621400, 764800, 795392, 994240, 1242800, 1529600, 1988480, 2485600, 3976960, 4971200, 9942400, 19884800]

約数ペア:

[(1, 19884800), (2, 9942400), (4, 4971200), (5, 3976960), (8, 2485600), (10, 1988480), (13, 1529600), (16, 1242800), (20, 994240), (25, 795392), (26, 764800), (32, 621400), (40, 497120), (50, 397696), (52, 382400), (64, 310700), (65, 305920), (80, 248560), (100, 198848), (104, 191200), (128, 155350), (130, 152960), (160, 124280), (200, 99424), (208, 95600), (239, 83200), (256, 77675), (260, 76480), (320, 62140), (325, 61184), (400, 49712), (416, 47800), (478, 41600), (520, 38240), (640, 31070), (650, 30592), (800, 24856), (832, 23900), (956, 20800), (1040, 19120), (1195, 16640), (1280, 15535), (1300, 15296), (1600, 12428), (1664, 11950), (1912, 10400), (2080, 9560), (2390, 8320), (2600, 7648), (3107, 6400), (3200, 6214), (3328, 5975), (3824, 5200), (4160, 4780)]