2189640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 6687360

約数和(自身を除く): 4497720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 257, 284, 355, 426, 514, 568, 710, 771, 852, 1028, 1065, 1285, 1420, 1542, 1704, 2056, 2130, 2570, 2840, 3084, 3855, 4260, 5140, 6168, 7710, 8520, 10280, 15420, 18247, 30840, 36494, 54741, 72988, 91235, 109482, 145976, 182470, 218964, 273705, 364940, 437928, 547410, 729880, 1094820, 2189640]

約数ペア:

[(1, 2189640), (2, 1094820), (3, 729880), (4, 547410), (5, 437928), (6, 364940), (8, 273705), (10, 218964), (12, 182470), (15, 145976), (20, 109482), (24, 91235), (30, 72988), (40, 54741), (60, 36494), (71, 30840), (120, 18247), (142, 15420), (213, 10280), (257, 8520), (284, 7710), (355, 6168), (426, 5140), (514, 4260), (568, 3855), (710, 3084), (771, 2840), (852, 2570), (1028, 2130), (1065, 2056), (1285, 1704), (1420, 1542)]