19455920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22109}}^1$

素因数の和:22133

約数の個数: 40

約数和(自身を含む): 49349520

約数和(自身を除く): 29893600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22109, 44218, 88436, 110545, 176872, 221090, 243199, 353744, 442180, 486398, 884360, 972796, 1215995, 1768720, 1945592, 2431990, 3891184, 4863980, 9727960, 19455920]

約数ペア:

[(1, 19455920), (2, 9727960), (4, 4863980), (5, 3891184), (8, 2431990), (10, 1945592), (11, 1768720), (16, 1215995), (20, 972796), (22, 884360), (40, 486398), (44, 442180), (55, 353744), (80, 243199), (88, 221090), (110, 176872), (176, 110545), (220, 88436), (440, 44218), (880, 22109)]