728618215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{3643}}^1$

素因数の和:3859

約数の個数: 32

約数和(自身を含む): 1002770496

約数和(自身を除く): 274152281

約数列:

[1, 5, 13, 17, 65, 85, 181, 221, 905, 1105, 2353, 3077, 3643, 11765, 15385, 18215, 40001, 47359, 61931, 200005, 236795, 309655, 659383, 805103, 3296915, 4025515, 8571979, 11209511, 42859895, 56047555, 145723643, 728618215]

約数ペア:

[(1, 728618215), (5, 145723643), (13, 56047555), (17, 42859895), (65, 11209511), (85, 8571979), (181, 4025515), (221, 3296915), (905, 805103), (1105, 659383), (2353, 309655), (3077, 236795), (3643, 200005), (11765, 61931), (15385, 47359), (18215, 40001)]