19780560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:433

約数の個数: 120

約数和(自身を含む): 67433184

約数和(自身を除く): 47652624

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 83, 90, 120, 144, 166, 180, 240, 249, 331, 332, 360, 415, 498, 662, 664, 720, 747, 830, 993, 996, 1245, 1324, 1328, 1494, 1655, 1660, 1986, 1992, 2490, 2648, 2979, 2988, 3310, 3320, 3735, 3972, 3984, 4965, 4980, 5296, 5958, 5976, 6620, 6640, 7470, 7944, 9930, 9960, 11916, 11952, 13240, 14895, 14940, 15888, 19860, 19920, 23832, 26480, 27473, 29790, 29880, 39720, 47664, 54946, 59580, 59760, 79440, 82419, 109892, 119160, 137365, 164838, 219784, 238320, 247257, 274730, 329676, 412095, 439568, 494514, 549460, 659352, 824190, 989028, 1098920, 1236285, 1318704, 1648380, 1978056, 2197840, 2472570, 3296760, 3956112, 4945140, 6593520, 9890280, 19780560]

約数ペア:

[(1, 19780560), (2, 9890280), (3, 6593520), (4, 4945140), (5, 3956112), (6, 3296760), (8, 2472570), (9, 2197840), (10, 1978056), (12, 1648380), (15, 1318704), (16, 1236285), (18, 1098920), (20, 989028), (24, 824190), (30, 659352), (36, 549460), (40, 494514), (45, 439568), (48, 412095), (60, 329676), (72, 274730), (80, 247257), (83, 238320), (90, 219784), (120, 164838), (144, 137365), (166, 119160), (180, 109892), (240, 82419), (249, 79440), (331, 59760), (332, 59580), (360, 54946), (415, 47664), (498, 39720), (662, 29880), (664, 29790), (720, 27473), (747, 26480), (830, 23832), (993, 19920), (996, 19860), (1245, 15888), (1324, 14940), (1328, 14895), (1494, 13240), (1655, 11952), (1660, 11916), (1986, 9960), (1992, 9930), (2490, 7944), (2648, 7470), (2979, 6640), (2988, 6620), (3310, 5976), (3320, 5958), (3735, 5296), (3972, 4980), (3984, 4965)]