19604988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 53905488

約数和(自身を除く): 34300500

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 163, 234, 257, 326, 468, 489, 514, 652, 771, 978, 1028, 1467, 1542, 1956, 2119, 2313, 2934, 3084, 3341, 4238, 4626, 5868, 6357, 6682, 8476, 9252, 10023, 12714, 13364, 19071, 20046, 25428, 30069, 38142, 40092, 41891, 60138, 76284, 83782, 120276, 125673, 167564, 251346, 377019, 502692, 544583, 754038, 1089166, 1508076, 1633749, 2178332, 3267498, 4901247, 6534996, 9802494, 19604988]

約数ペア:

[(1, 19604988), (2, 9802494), (3, 6534996), (4, 4901247), (6, 3267498), (9, 2178332), (12, 1633749), (13, 1508076), (18, 1089166), (26, 754038), (36, 544583), (39, 502692), (52, 377019), (78, 251346), (117, 167564), (156, 125673), (163, 120276), (234, 83782), (257, 76284), (326, 60138), (468, 41891), (489, 40092), (514, 38142), (652, 30069), (771, 25428), (978, 20046), (1028, 19071), (1467, 13364), (1542, 12714), (1956, 10023), (2119, 9252), (2313, 8476), (2934, 6682), (3084, 6357), (3341, 5868), (4238, 4626)]