21866145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 20711775

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 43, 87, 105, 129, 145, 167, 203, 215, 301, 435, 501, 609, 645, 835, 903, 1015, 1169, 1247, 1505, 2505, 3045, 3507, 3741, 4515, 4843, 5845, 6235, 7181, 8729, 14529, 17535, 18705, 21543, 24215, 26187, 33901, 35905, 43645, 50267, 72645, 101703, 107715, 130935, 150801, 169505, 208249, 251335, 508515, 624747, 754005, 1041245, 1457743, 3123735, 4373229, 7288715, 21866145]

約数ペア:

[(1, 21866145), (3, 7288715), (5, 4373229), (7, 3123735), (15, 1457743), (21, 1041245), (29, 754005), (35, 624747), (43, 508515), (87, 251335), (105, 208249), (129, 169505), (145, 150801), (167, 130935), (203, 107715), (215, 101703), (301, 72645), (435, 50267), (501, 43645), (609, 35905), (645, 33901), (835, 26187), (903, 24215), (1015, 21543), (1169, 18705), (1247, 17535), (1505, 14529), (2505, 8729), (3045, 7181), (3507, 6235), (3741, 5845), (4515, 4843)]