1639821978

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{2221981}}^1$

素因数の和:2222030

約数の個数: 24

約数和(自身を含む): 3639606516

約数和(自身を除く): 1999784538

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738, 2221981, 4443962, 6665943, 13331886, 19997829, 39995658, 91101221, 182202442, 273303663, 546607326, 819910989, 1639821978]

約数ペア:

[(1, 1639821978), (2, 819910989), (3, 546607326), (6, 273303663), (9, 182202442), (18, 91101221), (41, 39995658), (82, 19997829), (123, 13331886), (246, 6665943), (369, 4443962), (738, 2221981)]