19995558

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 46725120

約数和(自身を除く): 26729562

約数列:

[1, 2, 3, 6, 11, 22, 29, 31, 33, 58, 62, 66, 87, 93, 174, 186, 319, 337, 341, 638, 674, 682, 899, 957, 1011, 1023, 1798, 1914, 2022, 2046, 2697, 3707, 5394, 7414, 9773, 9889, 10447, 11121, 19546, 19778, 20894, 22242, 29319, 29667, 31341, 58638, 59334, 62682, 107503, 114917, 215006, 229834, 302963, 322509, 344751, 605926, 645018, 689502, 908889, 1817778, 3332593, 6665186, 9997779, 19995558]

約数ペア:

[(1, 19995558), (2, 9997779), (3, 6665186), (6, 3332593), (11, 1817778), (22, 908889), (29, 689502), (31, 645018), (33, 605926), (58, 344751), (62, 322509), (66, 302963), (87, 229834), (93, 215006), (174, 114917), (186, 107503), (319, 62682), (337, 59334), (341, 58638), (638, 31341), (674, 29667), (682, 29319), (899, 22242), (957, 20894), (1011, 19778), (1023, 19546), (1798, 11121), (1914, 10447), (2022, 9889), (2046, 9773), (2697, 7414), (3707, 5394)]