20995095

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 39836160

約数和(自身を除く): 18841065

約数列:

[1, 3, 5, 11, 15, 19, 33, 37, 55, 57, 95, 111, 165, 181, 185, 209, 285, 407, 543, 555, 627, 703, 905, 1045, 1221, 1991, 2035, 2109, 2715, 3135, 3439, 3515, 5973, 6105, 6697, 7733, 9955, 10317, 10545, 17195, 20091, 23199, 29865, 33485, 37829, 38665, 51585, 73667, 100455, 113487, 115995, 127243, 189145, 221001, 368335, 381729, 567435, 636215, 1105005, 1399673, 1908645, 4199019, 6998365, 20995095]

約数ペア:

[(1, 20995095), (3, 6998365), (5, 4199019), (11, 1908645), (15, 1399673), (19, 1105005), (33, 636215), (37, 567435), (55, 381729), (57, 368335), (95, 221001), (111, 189145), (165, 127243), (181, 115995), (185, 113487), (209, 100455), (285, 73667), (407, 51585), (543, 38665), (555, 37829), (627, 33485), (703, 29865), (905, 23199), (1045, 20091), (1221, 17195), (1991, 10545), (2035, 10317), (2109, 9955), (2715, 7733), (3135, 6697), (3439, 6105), (3515, 5973)]