19780430

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:500

約数の個数: 32

約数和(自身を含む): 36789984

約数和(自身を除く): 17009554

約数列:

[1, 2, 5, 10, 43, 86, 157, 215, 293, 314, 430, 586, 785, 1465, 1570, 2930, 6751, 12599, 13502, 25198, 33755, 46001, 62995, 67510, 92002, 125990, 230005, 460010, 1978043, 3956086, 9890215, 19780430]

約数ペア:

[(1, 19780430), (2, 9890215), (5, 3956086), (10, 1978043), (43, 460010), (86, 230005), (157, 125990), (215, 92002), (293, 67510), (314, 62995), (430, 46001), (586, 33755), (785, 25198), (1465, 13502), (1570, 12599), (2930, 6751)]