20949117

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 35163072

約数和(自身を除く): 14213955

約数列:

[1, 3, 7, 17, 21, 49, 51, 83, 101, 119, 147, 249, 303, 357, 581, 707, 833, 1411, 1717, 1743, 2121, 2499, 4067, 4233, 4949, 5151, 8383, 9877, 12019, 12201, 14847, 25149, 29631, 36057, 58681, 69139, 84133, 142511, 176043, 207417, 252399, 410767, 427533, 997577, 1232301, 2992731, 6983039, 20949117]

約数ペア:

[(1, 20949117), (3, 6983039), (7, 2992731), (17, 1232301), (21, 997577), (49, 427533), (51, 410767), (83, 252399), (101, 207417), (119, 176043), (147, 142511), (249, 84133), (303, 69139), (357, 58681), (581, 36057), (707, 29631), (833, 25149), (1411, 14847), (1717, 12201), (1743, 12019), (2121, 9877), (2499, 8383), (4067, 5151), (4233, 4949)]