20898480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4583}}^1$

素因数の和:4618

約数の個数: 80

約数和(自身を含む): 68209920

約数和(自身を除く): 47311440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4560, 4583, 9166, 13749, 18332, 22915, 27498, 36664, 45830, 54996, 68745, 73328, 87077, 91660, 109992, 137490, 174154, 183320, 219984, 261231, 274980, 348308, 366640, 435385, 522462, 549960, 696616, 870770, 1044924, 1099920, 1306155, 1393232, 1741540, 2089848, 2612310, 3483080, 4179696, 5224620, 6966160, 10449240, 20898480]

約数ペア:

[(1, 20898480), (2, 10449240), (3, 6966160), (4, 5224620), (5, 4179696), (6, 3483080), (8, 2612310), (10, 2089848), (12, 1741540), (15, 1393232), (16, 1306155), (19, 1099920), (20, 1044924), (24, 870770), (30, 696616), (38, 549960), (40, 522462), (48, 435385), (57, 366640), (60, 348308), (76, 274980), (80, 261231), (95, 219984), (114, 183320), (120, 174154), (152, 137490), (190, 109992), (228, 91660), (240, 87077), (285, 73328), (304, 68745), (380, 54996), (456, 45830), (570, 36664), (760, 27498), (912, 22915), (1140, 18332), (1520, 13749), (2280, 9166), (4560, 4583)]