20119995

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 42375168

約数和(自身を除く): 22255173

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 47, 63, 81, 105, 135, 141, 151, 189, 235, 315, 329, 405, 423, 453, 567, 705, 755, 945, 987, 1057, 1269, 1359, 1645, 2115, 2265, 2835, 2961, 3171, 3807, 4077, 4935, 5285, 6345, 6795, 7097, 8883, 9513, 12231, 14805, 15855, 19035, 20385, 21291, 26649, 28539, 35485, 44415, 47565, 49679, 61155, 63873, 85617, 106455, 133245, 142695, 149037, 191619, 248395, 319365, 428085, 447111, 574857, 745185, 958095, 1341333, 2235555, 2874285, 4023999, 6706665, 20119995]

約数ペア:

[(1, 20119995), (3, 6706665), (5, 4023999), (7, 2874285), (9, 2235555), (15, 1341333), (21, 958095), (27, 745185), (35, 574857), (45, 447111), (47, 428085), (63, 319365), (81, 248395), (105, 191619), (135, 149037), (141, 142695), (151, 133245), (189, 106455), (235, 85617), (315, 63873), (329, 61155), (405, 49679), (423, 47565), (453, 44415), (567, 35485), (705, 28539), (755, 26649), (945, 21291), (987, 20385), (1057, 19035), (1269, 15855), (1359, 14805), (1645, 12231), (2115, 9513), (2265, 8883), (2835, 7097), (2961, 6795), (3171, 6345), (3807, 5285), (4077, 4935)]