991001180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{122953}}^1$

素因数の和:123006

約数の個数: 48

約数和(自身を含む): 2313502464

約数和(自身を除く): 1322501284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 122953, 245906, 491812, 614765, 1229530, 1598389, 2459060, 3196778, 3811543, 6393556, 7623086, 7991945, 15246172, 15983890, 19057715, 31967780, 38115430, 49550059, 76230860, 99100118, 198200236, 247750295, 495500590, 991001180]

約数ペア:

[(1, 991001180), (2, 495500590), (4, 247750295), (5, 198200236), (10, 99100118), (13, 76230860), (20, 49550059), (26, 38115430), (31, 31967780), (52, 19057715), (62, 15983890), (65, 15246172), (124, 7991945), (130, 7623086), (155, 6393556), (260, 3811543), (310, 3196778), (403, 2459060), (620, 1598389), (806, 1229530), (1612, 614765), (2015, 491812), (4030, 245906), (8060, 122953)]