51271120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 127224000

約数和(自身を除く): 75952880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 379, 380, 445, 712, 758, 760, 890, 1424, 1516, 1520, 1691, 1780, 1895, 3032, 3382, 3560, 3790, 6064, 6764, 7120, 7201, 7580, 8455, 13528, 14402, 15160, 16910, 27056, 28804, 30320, 33731, 33820, 36005, 57608, 67462, 67640, 72010, 115216, 134924, 135280, 144020, 168655, 269848, 288040, 337310, 539696, 576080, 640889, 674620, 1281778, 1349240, 2563556, 2698480, 3204445, 5127112, 6408890, 10254224, 12817780, 25635560, 51271120]

約数ペア:

[(1, 51271120), (2, 25635560), (4, 12817780), (5, 10254224), (8, 6408890), (10, 5127112), (16, 3204445), (19, 2698480), (20, 2563556), (38, 1349240), (40, 1281778), (76, 674620), (80, 640889), (89, 576080), (95, 539696), (152, 337310), (178, 288040), (190, 269848), (304, 168655), (356, 144020), (379, 135280), (380, 134924), (445, 115216), (712, 72010), (758, 67640), (760, 67462), (890, 57608), (1424, 36005), (1516, 33820), (1520, 33731), (1691, 30320), (1780, 28804), (1895, 27056), (3032, 16910), (3382, 15160), (3560, 14402), (3790, 13528), (6064, 8455), (6764, 7580), (7120, 7201)]