21703815

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 47770560

約数和(自身を除く): 26066745

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 49, 51, 63, 85, 105, 119, 135, 147, 153, 189, 193, 245, 255, 315, 357, 441, 459, 579, 595, 735, 765, 833, 945, 965, 1071, 1323, 1351, 1737, 1785, 2205, 2295, 2499, 2895, 3213, 3281, 4053, 4165, 5211, 5355, 6615, 6755, 7497, 8685, 9457, 9843, 12159, 12495, 16065, 16405, 20265, 22491, 22967, 26055, 28371, 29529, 36477, 37485, 47285, 49215, 60795, 68901, 85113, 88587, 112455, 114835, 141855, 147645, 160769, 182385, 206703, 255339, 344505, 425565, 442935, 482307, 620109, 803845, 1033515, 1276695, 1446921, 2411535, 3100545, 4340763, 7234605, 21703815]

約数ペア:

[(1, 21703815), (3, 7234605), (5, 4340763), (7, 3100545), (9, 2411535), (15, 1446921), (17, 1276695), (21, 1033515), (27, 803845), (35, 620109), (45, 482307), (49, 442935), (51, 425565), (63, 344505), (85, 255339), (105, 206703), (119, 182385), (135, 160769), (147, 147645), (153, 141855), (189, 114835), (193, 112455), (245, 88587), (255, 85113), (315, 68901), (357, 60795), (441, 49215), (459, 47285), (579, 37485), (595, 36477), (735, 29529), (765, 28371), (833, 26055), (945, 22967), (965, 22491), (1071, 20265), (1323, 16405), (1351, 16065), (1737, 12495), (1785, 12159), (2205, 9843), (2295, 9457), (2499, 8685), (2895, 7497), (3213, 6755), (3281, 6615), (4053, 5355), (4165, 5211)]