20286015

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 17038785

約数列:

[1, 3, 5, 15, 17, 19, 51, 53, 57, 79, 85, 95, 159, 237, 255, 265, 285, 323, 395, 795, 901, 969, 1007, 1185, 1343, 1501, 1615, 2703, 3021, 4029, 4187, 4503, 4505, 4845, 5035, 6715, 7505, 12561, 13515, 15105, 17119, 20145, 20935, 22515, 25517, 51357, 62805, 71179, 76551, 79553, 85595, 127585, 213537, 238659, 256785, 355895, 382755, 397765, 1067685, 1193295, 1352401, 4057203, 6762005, 20286015]

約数ペア:

[(1, 20286015), (3, 6762005), (5, 4057203), (15, 1352401), (17, 1193295), (19, 1067685), (51, 397765), (53, 382755), (57, 355895), (79, 256785), (85, 238659), (95, 213537), (159, 127585), (237, 85595), (255, 79553), (265, 76551), (285, 71179), (323, 62805), (395, 51357), (795, 25517), (901, 22515), (969, 20935), (1007, 20145), (1185, 17119), (1343, 15105), (1501, 13515), (1615, 12561), (2703, 7505), (3021, 6715), (4029, 5035), (4187, 4845), (4503, 4505)]