15815780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 35498736

約数和(自身を除く): 19682956

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 181, 257, 340, 362, 514, 724, 905, 1028, 1285, 1810, 2570, 3077, 3620, 4369, 5140, 6154, 8738, 12308, 15385, 17476, 21845, 30770, 43690, 46517, 61540, 87380, 93034, 186068, 232585, 465170, 790789, 930340, 1581578, 3163156, 3953945, 7907890, 15815780]

約数ペア:

[(1, 15815780), (2, 7907890), (4, 3953945), (5, 3163156), (10, 1581578), (17, 930340), (20, 790789), (34, 465170), (68, 232585), (85, 186068), (170, 93034), (181, 87380), (257, 61540), (340, 46517), (362, 43690), (514, 30770), (724, 21845), (905, 17476), (1028, 15385), (1285, 12308), (1810, 8738), (2570, 6154), (3077, 5140), (3620, 4369)]