21891216

素因数分解:

$2^4\times 3^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:364

約数の個数: 80

約数和(自身を含む): 59996160

約数和(自身を除く): 38104944

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 46, 48, 69, 79, 92, 138, 158, 184, 237, 251, 276, 316, 368, 474, 502, 552, 632, 753, 948, 1004, 1104, 1264, 1506, 1817, 1896, 2008, 3012, 3634, 3792, 4016, 5451, 5773, 6024, 7268, 10902, 11546, 12048, 14536, 17319, 19829, 21804, 23092, 29072, 34638, 39658, 43608, 46184, 59487, 69276, 79316, 87216, 92368, 118974, 138552, 158632, 237948, 277104, 317264, 456067, 475896, 912134, 951792, 1368201, 1824268, 2736402, 3648536, 5472804, 7297072, 10945608, 21891216]

約数ペア:

[(1, 21891216), (2, 10945608), (3, 7297072), (4, 5472804), (6, 3648536), (8, 2736402), (12, 1824268), (16, 1368201), (23, 951792), (24, 912134), (46, 475896), (48, 456067), (69, 317264), (79, 277104), (92, 237948), (138, 158632), (158, 138552), (184, 118974), (237, 92368), (251, 87216), (276, 79316), (316, 69276), (368, 59487), (474, 46184), (502, 43608), (552, 39658), (632, 34638), (753, 29072), (948, 23092), (1004, 21804), (1104, 19829), (1264, 17319), (1506, 14536), (1817, 12048), (1896, 11546), (2008, 10902), (3012, 7268), (3634, 6024), (3792, 5773), (4016, 5451)]