20753719

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 27025920

約数和(自身を除く): 6272201

約数列:

[1, 7, 17, 19, 67, 119, 133, 137, 323, 469, 959, 1139, 1273, 2261, 2329, 2603, 7973, 8911, 9179, 16303, 18221, 21641, 44251, 64253, 151487, 156043, 174401, 309757, 1092301, 1220807, 2964817, 20753719]

約数ペア:

[(1, 20753719), (7, 2964817), (17, 1220807), (19, 1092301), (67, 309757), (119, 174401), (133, 156043), (137, 151487), (323, 64253), (469, 44251), (959, 21641), (1139, 18221), (1273, 16303), (2261, 9179), (2329, 8911), (2603, 7973)]