28913920

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{461}}^1$

素因数の和:496

約数の個数: 108

約数和(自身を含む): 80740044

約数和(自身を除く): 51826124

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 461, 490, 560, 640, 784, 896, 922, 980, 1120, 1280, 1568, 1792, 1844, 1960, 2240, 2305, 3136, 3227, 3688, 3920, 4480, 4610, 6272, 6454, 7376, 7840, 8960, 9220, 12544, 12908, 14752, 15680, 16135, 18440, 22589, 25816, 29504, 31360, 32270, 36880, 45178, 51632, 59008, 62720, 64540, 73760, 90356, 103264, 112945, 118016, 129080, 147520, 180712, 206528, 225890, 258160, 295040, 361424, 413056, 451780, 516320, 590080, 722848, 826112, 903560, 1032640, 1445696, 1807120, 2065280, 2891392, 3614240, 4130560, 5782784, 7228480, 14456960, 28913920]

約数ペア:

[(1, 28913920), (2, 14456960), (4, 7228480), (5, 5782784), (7, 4130560), (8, 3614240), (10, 2891392), (14, 2065280), (16, 1807120), (20, 1445696), (28, 1032640), (32, 903560), (35, 826112), (40, 722848), (49, 590080), (56, 516320), (64, 451780), (70, 413056), (80, 361424), (98, 295040), (112, 258160), (128, 225890), (140, 206528), (160, 180712), (196, 147520), (224, 129080), (245, 118016), (256, 112945), (280, 103264), (320, 90356), (392, 73760), (448, 64540), (461, 62720), (490, 59008), (560, 51632), (640, 45178), (784, 36880), (896, 32270), (922, 31360), (980, 29504), (1120, 25816), (1280, 22589), (1568, 18440), (1792, 16135), (1844, 15680), (1960, 14752), (2240, 12908), (2305, 12544), (3136, 9220), (3227, 8960), (3688, 7840), (3920, 7376), (4480, 6454), (4610, 6272)]