20329686

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 72

約数和(自身を含む): 49159656

約数和(自身を除く): 28829970

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 41, 78, 82, 117, 123, 163, 169, 234, 246, 326, 338, 369, 489, 507, 533, 738, 978, 1014, 1066, 1467, 1521, 1599, 2119, 2934, 3042, 3198, 4238, 4797, 6357, 6683, 6929, 9594, 12714, 13366, 13858, 19071, 20049, 20787, 27547, 38142, 40098, 41574, 55094, 60147, 62361, 82641, 86879, 120294, 124722, 165282, 173758, 247923, 260637, 495846, 521274, 781911, 1129427, 1563822, 2258854, 3388281, 6776562, 10164843, 20329686]

約数ペア:

[(1, 20329686), (2, 10164843), (3, 6776562), (6, 3388281), (9, 2258854), (13, 1563822), (18, 1129427), (26, 781911), (39, 521274), (41, 495846), (78, 260637), (82, 247923), (117, 173758), (123, 165282), (163, 124722), (169, 120294), (234, 86879), (246, 82641), (326, 62361), (338, 60147), (369, 55094), (489, 41574), (507, 40098), (533, 38142), (738, 27547), (978, 20787), (1014, 20049), (1066, 19071), (1467, 13858), (1521, 13366), (1599, 12714), (2119, 9594), (2934, 6929), (3042, 6683), (3198, 6357), (4238, 4797)]