20722095

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 39168000

約数和(自身を除く): 18445905

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 67, 79, 87, 135, 145, 201, 237, 261, 335, 395, 435, 603, 711, 783, 1005, 1185, 1305, 1809, 1943, 2133, 2291, 3015, 3555, 3915, 5293, 5829, 6873, 9045, 9715, 10665, 11455, 15879, 17487, 20619, 26465, 29145, 34365, 47637, 52461, 61857, 79395, 87435, 103095, 142911, 153497, 238185, 262305, 309285, 460491, 714555, 767485, 1381473, 2302455, 4144419, 6907365, 20722095]

約数ペア:

[(1, 20722095), (3, 6907365), (5, 4144419), (9, 2302455), (15, 1381473), (27, 767485), (29, 714555), (45, 460491), (67, 309285), (79, 262305), (87, 238185), (135, 153497), (145, 142911), (201, 103095), (237, 87435), (261, 79395), (335, 61857), (395, 52461), (435, 47637), (603, 34365), (711, 29145), (783, 26465), (1005, 20619), (1185, 17487), (1305, 15879), (1809, 11455), (1943, 10665), (2133, 9715), (2291, 9045), (3015, 6873), (3555, 5829), (3915, 5293)]