21231028

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:161

約数の個数: 96

約数和(自身を含む): 50125824

約数和(自身を除く): 28894796

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 47, 52, 68, 73, 91, 94, 119, 146, 182, 188, 221, 238, 292, 329, 364, 442, 476, 511, 611, 658, 799, 884, 949, 1022, 1222, 1241, 1316, 1547, 1598, 1898, 2044, 2444, 2482, 3094, 3196, 3431, 3796, 4277, 4964, 5593, 6188, 6643, 6862, 8554, 8687, 10387, 11186, 13286, 13724, 16133, 17108, 17374, 20774, 22372, 24017, 26572, 32266, 34748, 41548, 44603, 48034, 58327, 64532, 72709, 89206, 96068, 112931, 116654, 145418, 178412, 225862, 233308, 290836, 312221, 408289, 451724, 624442, 758251, 816578, 1248884, 1516502, 1633156, 3033004, 5307757, 10615514, 21231028]

約数ペア:

[(1, 21231028), (2, 10615514), (4, 5307757), (7, 3033004), (13, 1633156), (14, 1516502), (17, 1248884), (26, 816578), (28, 758251), (34, 624442), (47, 451724), (52, 408289), (68, 312221), (73, 290836), (91, 233308), (94, 225862), (119, 178412), (146, 145418), (182, 116654), (188, 112931), (221, 96068), (238, 89206), (292, 72709), (329, 64532), (364, 58327), (442, 48034), (476, 44603), (511, 41548), (611, 34748), (658, 32266), (799, 26572), (884, 24017), (949, 22372), (1022, 20774), (1222, 17374), (1241, 17108), (1316, 16133), (1547, 13724), (1598, 13286), (1898, 11186), (2044, 10387), (2444, 8687), (2482, 8554), (3094, 6862), (3196, 6643), (3431, 6188), (3796, 5593), (4277, 4964)]