28796560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27689}}^1$

素因数の和:27715

約数の個数: 40

約数和(自身を含む): 72104760

約数和(自身を除く): 43308200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27689, 55378, 110756, 138445, 221512, 276890, 359957, 443024, 553780, 719914, 1107560, 1439828, 1799785, 2215120, 2879656, 3599570, 5759312, 7199140, 14398280, 28796560]

約数ペア:

[(1, 28796560), (2, 14398280), (4, 7199140), (5, 5759312), (8, 3599570), (10, 2879656), (13, 2215120), (16, 1799785), (20, 1439828), (26, 1107560), (40, 719914), (52, 553780), (65, 443024), (80, 359957), (104, 276890), (130, 221512), (208, 138445), (260, 110756), (520, 55378), (1040, 27689)]