21569730

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7901}}^1$

素因数の和:7931

約数の個数: 64

約数和(自身を含む): 63721728

約数和(自身を除く): 42151998

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7901, 15802, 23703, 39505, 47406, 55307, 79010, 102713, 110614, 118515, 165921, 205426, 237030, 276535, 308139, 331842, 513565, 553070, 616278, 718991, 829605, 1027130, 1437982, 1540695, 1659210, 2156973, 3081390, 3594955, 4313946, 7189910, 10784865, 21569730]

約数ペア:

[(1, 21569730), (2, 10784865), (3, 7189910), (5, 4313946), (6, 3594955), (7, 3081390), (10, 2156973), (13, 1659210), (14, 1540695), (15, 1437982), (21, 1027130), (26, 829605), (30, 718991), (35, 616278), (39, 553070), (42, 513565), (65, 331842), (70, 308139), (78, 276535), (91, 237030), (105, 205426), (130, 165921), (182, 118515), (195, 110614), (210, 102713), (273, 79010), (390, 55307), (455, 47406), (546, 39505), (910, 23703), (1365, 15802), (2730, 7901)]