81963210

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{607}}^1\times {\mathrm{643}}^1$

素因数の和:1267

約数の個数: 64

約数和(自身を含む): 225533952

約数和(自身を除く): 143570742

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 607, 643, 1214, 1286, 1821, 1929, 3035, 3215, 3642, 3858, 4249, 4501, 6070, 6430, 8498, 9002, 9105, 9645, 12747, 13503, 18210, 19290, 21245, 22505, 25494, 27006, 42490, 45010, 63735, 67515, 127470, 135030, 390301, 780602, 1170903, 1951505, 2341806, 2732107, 3903010, 5464214, 5854515, 8196321, 11709030, 13660535, 16392642, 27321070, 40981605, 81963210]

約数ペア:

[(1, 81963210), (2, 40981605), (3, 27321070), (5, 16392642), (6, 13660535), (7, 11709030), (10, 8196321), (14, 5854515), (15, 5464214), (21, 3903010), (30, 2732107), (35, 2341806), (42, 1951505), (70, 1170903), (105, 780602), (210, 390301), (607, 135030), (643, 127470), (1214, 67515), (1286, 63735), (1821, 45010), (1929, 42490), (3035, 27006), (3215, 25494), (3642, 22505), (3858, 21245), (4249, 19290), (4501, 18210), (6070, 13503), (6430, 12747), (8498, 9645), (9002, 9105)]