1640554480

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{85091}}^1$

素因数の和:85345

約数の個数: 40

約数和(自身を含む): 3830161104

約数和(自身を除く): 2189606624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4820, 9640, 19280, 85091, 170182, 340364, 425455, 680728, 850910, 1361456, 1701820, 3403640, 6807280, 20506931, 41013862, 82027724, 102534655, 164055448, 205069310, 328110896, 410138620, 820277240, 1640554480]

約数ペア:

[(1, 1640554480), (2, 820277240), (4, 410138620), (5, 328110896), (8, 205069310), (10, 164055448), (16, 102534655), (20, 82027724), (40, 41013862), (80, 20506931), (241, 6807280), (482, 3403640), (964, 1701820), (1205, 1361456), (1928, 850910), (2410, 680728), (3856, 425455), (4820, 340364), (9640, 170182), (19280, 85091)]