18691245

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{461}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 35026992

約数和(自身を除く): 16335747

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 53, 85, 153, 159, 255, 265, 461, 477, 765, 795, 901, 1383, 2305, 2385, 2703, 4149, 4505, 6915, 7837, 8109, 13515, 20745, 23511, 24433, 39185, 40545, 70533, 73299, 117555, 122165, 219897, 352665, 366495, 415361, 1099485, 1246083, 2076805, 3738249, 6230415, 18691245]

約数ペア:

[(1, 18691245), (3, 6230415), (5, 3738249), (9, 2076805), (15, 1246083), (17, 1099485), (45, 415361), (51, 366495), (53, 352665), (85, 219897), (153, 122165), (159, 117555), (255, 73299), (265, 70533), (461, 40545), (477, 39185), (765, 24433), (795, 23511), (901, 20745), (1383, 13515), (2305, 8109), (2385, 7837), (2703, 6915), (4149, 4505)]