21004103988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{1039}}^1\times {\mathrm{80221}}^1$

素因数の和:81277

約数の個数: 72

約数和(自身を含む): 60737680640

約数和(自身を除く): 39733576652

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 1039, 2078, 3117, 4156, 6234, 7273, 9351, 12468, 14546, 18702, 21819, 29092, 37404, 43638, 65457, 80221, 87276, 130914, 160442, 240663, 261828, 320884, 481326, 561547, 721989, 962652, 1123094, 1443978, 1684641, 2246188, 2887956, 3369282, 5053923, 6738564, 10107846, 20215692, 83349619, 166699238, 250048857, 333398476, 500097714, 583447333, 750146571, 1000195428, 1166894666, 1500293142, 1750341999, 2333789332, 3000586284, 3500683998, 5251025997, 7001367996, 10502051994, 21004103988]

約数ペア:

[(1, 21004103988), (2, 10502051994), (3, 7001367996), (4, 5251025997), (6, 3500683998), (7, 3000586284), (9, 2333789332), (12, 1750341999), (14, 1500293142), (18, 1166894666), (21, 1000195428), (28, 750146571), (36, 583447333), (42, 500097714), (63, 333398476), (84, 250048857), (126, 166699238), (252, 83349619), (1039, 20215692), (2078, 10107846), (3117, 6738564), (4156, 5053923), (6234, 3369282), (7273, 2887956), (9351, 2246188), (12468, 1684641), (14546, 1443978), (18702, 1123094), (21819, 962652), (29092, 721989), (37404, 561547), (43638, 481326), (65457, 320884), (80221, 261828), (87276, 240663), (130914, 160442)]