123213990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{178571}}^1$

素因数の和:178604

約数の個数: 32

約数和(自身を含む): 308572416

約数和(自身を除く): 185358426

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 178571, 357142, 535713, 892855, 1071426, 1785710, 2678565, 4107133, 5357130, 8214266, 12321399, 20535665, 24642798, 41071330, 61606995, 123213990]

約数ペア:

[(1, 123213990), (2, 61606995), (3, 41071330), (5, 24642798), (6, 20535665), (10, 12321399), (15, 8214266), (23, 5357130), (30, 4107133), (46, 2678565), (69, 1785710), (115, 1071426), (138, 892855), (230, 535713), (345, 357142), (690, 178571)]