221031520

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19457}}^1$

素因数の和:19543

約数の個数: 48

約数和(自身を含む): 529568928

約数和(自身を除く): 308537408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11360, 19457, 38914, 77828, 97285, 155656, 194570, 311312, 389140, 622624, 778280, 1381447, 1556560, 2762894, 3113120, 5525788, 6907235, 11051576, 13814470, 22103152, 27628940, 44206304, 55257880, 110515760, 221031520]

約数ペア:

[(1, 221031520), (2, 110515760), (4, 55257880), (5, 44206304), (8, 27628940), (10, 22103152), (16, 13814470), (20, 11051576), (32, 6907235), (40, 5525788), (71, 3113120), (80, 2762894), (142, 1556560), (160, 1381447), (284, 778280), (355, 622624), (568, 389140), (710, 311312), (1136, 194570), (1420, 155656), (2272, 97285), (2840, 77828), (5680, 38914), (11360, 19457)]