17939980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{30931}}^1$

素因数の和:30969

約数の個数: 24

約数和(自身を含む): 38974320

約数和(自身を除く): 21034340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 30931, 61862, 123724, 154655, 309310, 618620, 896999, 1793998, 3587996, 4484995, 8969990, 17939980]

約数ペア:

[(1, 17939980), (2, 8969990), (4, 4484995), (5, 3587996), (10, 1793998), (20, 896999), (29, 618620), (58, 309310), (116, 154655), (145, 123724), (290, 61862), (580, 30931)]