20912680

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6299}}^1$

素因数の和:6393

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 26715320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6299, 12598, 25196, 31495, 50392, 62990, 125980, 251960, 522817, 1045634, 2091268, 2614085, 4182536, 5228170, 10456340, 20912680]

約数ペア:

[(1, 20912680), (2, 10456340), (4, 5228170), (5, 4182536), (8, 2614085), (10, 2091268), (20, 1045634), (40, 522817), (83, 251960), (166, 125980), (332, 62990), (415, 50392), (664, 31495), (830, 25196), (1660, 12598), (3320, 6299)]