21718332

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:403

約数の個数: 72

約数和(自身を含む): 57788640

約数和(自身を除く): 36070308

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 71, 87, 116, 142, 174, 213, 261, 284, 293, 348, 426, 522, 586, 639, 852, 879, 1044, 1172, 1278, 1758, 2059, 2556, 2637, 3516, 4118, 5274, 6177, 8236, 8497, 10548, 12354, 16994, 18531, 20803, 24708, 25491, 33988, 37062, 41606, 50982, 62409, 74124, 76473, 83212, 101964, 124818, 152946, 187227, 249636, 305892, 374454, 603287, 748908, 1206574, 1809861, 2413148, 3619722, 5429583, 7239444, 10859166, 21718332]

約数ペア:

[(1, 21718332), (2, 10859166), (3, 7239444), (4, 5429583), (6, 3619722), (9, 2413148), (12, 1809861), (18, 1206574), (29, 748908), (36, 603287), (58, 374454), (71, 305892), (87, 249636), (116, 187227), (142, 152946), (174, 124818), (213, 101964), (261, 83212), (284, 76473), (293, 74124), (348, 62409), (426, 50982), (522, 41606), (586, 37062), (639, 33988), (852, 25491), (879, 24708), (1044, 20803), (1172, 18531), (1278, 16994), (1758, 12354), (2059, 10548), (2556, 8497), (2637, 8236), (3516, 6177), (4118, 5274)]