21271260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:475

約数の個数: 96

約数和(自身を含む): 64189440

約数和(自身を除く): 42918180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 47, 57, 60, 76, 94, 95, 114, 141, 188, 190, 228, 235, 282, 285, 380, 397, 470, 564, 570, 705, 794, 893, 940, 1140, 1191, 1410, 1588, 1786, 1985, 2382, 2679, 2820, 3572, 3970, 4465, 4764, 5358, 5955, 7543, 7940, 8930, 10716, 11910, 13395, 15086, 17860, 18659, 22629, 23820, 26790, 30172, 37318, 37715, 45258, 53580, 55977, 74636, 75430, 90516, 93295, 111954, 113145, 150860, 186590, 223908, 226290, 279885, 354521, 373180, 452580, 559770, 709042, 1063563, 1119540, 1418084, 1772605, 2127126, 3545210, 4254252, 5317815, 7090420, 10635630, 21271260]

約数ペア:

[(1, 21271260), (2, 10635630), (3, 7090420), (4, 5317815), (5, 4254252), (6, 3545210), (10, 2127126), (12, 1772605), (15, 1418084), (19, 1119540), (20, 1063563), (30, 709042), (38, 559770), (47, 452580), (57, 373180), (60, 354521), (76, 279885), (94, 226290), (95, 223908), (114, 186590), (141, 150860), (188, 113145), (190, 111954), (228, 93295), (235, 90516), (282, 75430), (285, 74636), (380, 55977), (397, 53580), (470, 45258), (564, 37715), (570, 37318), (705, 30172), (794, 26790), (893, 23820), (940, 22629), (1140, 18659), (1191, 17860), (1410, 15086), (1588, 13395), (1786, 11910), (1985, 10716), (2382, 8930), (2679, 7940), (2820, 7543), (3572, 5955), (3970, 5358), (4465, 4764)]