21164820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2039}}^1$

素因数の和:2224

約数の個数: 48

約数和(自身を含む): 59633280

約数和(自身を除く): 38468460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 173, 346, 519, 692, 865, 1038, 1730, 2039, 2076, 2595, 3460, 4078, 5190, 6117, 8156, 10195, 10380, 12234, 20390, 24468, 30585, 40780, 61170, 122340, 352747, 705494, 1058241, 1410988, 1763735, 2116482, 3527470, 4232964, 5291205, 7054940, 10582410, 21164820]

約数ペア:

[(1, 21164820), (2, 10582410), (3, 7054940), (4, 5291205), (5, 4232964), (6, 3527470), (10, 2116482), (12, 1763735), (15, 1410988), (20, 1058241), (30, 705494), (60, 352747), (173, 122340), (346, 61170), (519, 40780), (692, 30585), (865, 24468), (1038, 20390), (1730, 12234), (2039, 10380), (2076, 10195), (2595, 8156), (3460, 6117), (4078, 5190)]