18420640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{16447}}^1$

素因数の和:16469

約数の個数: 48

約数和(自身を含む): 49738752

約数和(自身を除く): 31318112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 16447, 32894, 65788, 82235, 115129, 131576, 164470, 230258, 263152, 328940, 460516, 526304, 575645, 657880, 921032, 1151290, 1315760, 1842064, 2302580, 2631520, 3684128, 4605160, 9210320, 18420640]

約数ペア:

[(1, 18420640), (2, 9210320), (4, 4605160), (5, 3684128), (7, 2631520), (8, 2302580), (10, 1842064), (14, 1315760), (16, 1151290), (20, 921032), (28, 657880), (32, 575645), (35, 526304), (40, 460516), (56, 328940), (70, 263152), (80, 230258), (112, 164470), (140, 131576), (160, 115129), (224, 82235), (280, 65788), (560, 32894), (1120, 16447)]