18538880

素因数分解:

$2^7\times 5^1\times {\mathrm{83}}^1\times {\mathrm{349}}^1$

素因数の和:451

約数の個数: 64

約数和(自身を含む): 44982000

約数和(自身を除く): 26443120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 320, 332, 349, 415, 640, 664, 698, 830, 1328, 1396, 1660, 1745, 2656, 2792, 3320, 3490, 5312, 5584, 6640, 6980, 10624, 11168, 13280, 13960, 22336, 26560, 27920, 28967, 44672, 53120, 55840, 57934, 111680, 115868, 144835, 223360, 231736, 289670, 463472, 579340, 926944, 1158680, 1853888, 2317360, 3707776, 4634720, 9269440, 18538880]

約数ペア:

[(1, 18538880), (2, 9269440), (4, 4634720), (5, 3707776), (8, 2317360), (10, 1853888), (16, 1158680), (20, 926944), (32, 579340), (40, 463472), (64, 289670), (80, 231736), (83, 223360), (128, 144835), (160, 115868), (166, 111680), (320, 57934), (332, 55840), (349, 53120), (415, 44672), (640, 28967), (664, 27920), (698, 26560), (830, 22336), (1328, 13960), (1396, 13280), (1660, 11168), (1745, 10624), (2656, 6980), (2792, 6640), (3320, 5584), (3490, 5312)]