20955780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:426

約数の個数: 96

約数和(自身を含む): 65882880

約数和(自身を除く): 44927100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 151, 180, 257, 270, 302, 453, 514, 540, 604, 755, 771, 906, 1028, 1285, 1359, 1510, 1542, 1812, 2265, 2313, 2570, 2718, 3020, 3084, 3855, 4077, 4530, 4626, 5140, 5436, 6795, 6939, 7710, 8154, 9060, 9252, 11565, 13590, 13878, 15420, 16308, 20385, 23130, 27180, 27756, 34695, 38807, 40770, 46260, 69390, 77614, 81540, 116421, 138780, 155228, 194035, 232842, 349263, 388070, 465684, 582105, 698526, 776140, 1047789, 1164210, 1397052, 1746315, 2095578, 2328420, 3492630, 4191156, 5238945, 6985260, 10477890, 20955780]

約数ペア:

[(1, 20955780), (2, 10477890), (3, 6985260), (4, 5238945), (5, 4191156), (6, 3492630), (9, 2328420), (10, 2095578), (12, 1746315), (15, 1397052), (18, 1164210), (20, 1047789), (27, 776140), (30, 698526), (36, 582105), (45, 465684), (54, 388070), (60, 349263), (90, 232842), (108, 194035), (135, 155228), (151, 138780), (180, 116421), (257, 81540), (270, 77614), (302, 69390), (453, 46260), (514, 40770), (540, 38807), (604, 34695), (755, 27756), (771, 27180), (906, 23130), (1028, 20385), (1285, 16308), (1359, 15420), (1510, 13878), (1542, 13590), (1812, 11565), (2265, 9252), (2313, 9060), (2570, 8154), (2718, 7710), (3020, 6939), (3084, 6795), (3855, 5436), (4077, 5140), (4530, 4626)]