21615840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{883}}^1$

素因数の和:921

約数の個数: 144

約数和(自身を含む): 78191568

約数和(自身を除く): 56575728

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 204, 240, 255, 272, 288, 306, 340, 360, 408, 480, 510, 544, 612, 680, 720, 765, 816, 883, 1020, 1224, 1360, 1440, 1530, 1632, 1766, 2040, 2448, 2649, 2720, 3060, 3532, 4080, 4415, 4896, 5298, 6120, 7064, 7947, 8160, 8830, 10596, 12240, 13245, 14128, 15011, 15894, 17660, 21192, 24480, 26490, 28256, 30022, 31788, 35320, 39735, 42384, 45033, 52980, 60044, 63576, 70640, 75055, 79470, 84768, 90066, 105960, 120088, 127152, 135099, 141280, 150110, 158940, 180132, 211920, 225165, 240176, 254304, 270198, 300220, 317880, 360264, 423840, 450330, 480352, 540396, 600440, 635760, 675495, 720528, 900660, 1080792, 1200880, 1271520, 1350990, 1441056, 1801320, 2161584, 2401760, 2701980, 3602640, 4323168, 5403960, 7205280, 10807920, 21615840]

約数ペア:

[(1, 21615840), (2, 10807920), (3, 7205280), (4, 5403960), (5, 4323168), (6, 3602640), (8, 2701980), (9, 2401760), (10, 2161584), (12, 1801320), (15, 1441056), (16, 1350990), (17, 1271520), (18, 1200880), (20, 1080792), (24, 900660), (30, 720528), (32, 675495), (34, 635760), (36, 600440), (40, 540396), (45, 480352), (48, 450330), (51, 423840), (60, 360264), (68, 317880), (72, 300220), (80, 270198), (85, 254304), (90, 240176), (96, 225165), (102, 211920), (120, 180132), (136, 158940), (144, 150110), (153, 141280), (160, 135099), (170, 127152), (180, 120088), (204, 105960), (240, 90066), (255, 84768), (272, 79470), (288, 75055), (306, 70640), (340, 63576), (360, 60044), (408, 52980), (480, 45033), (510, 42384), (544, 39735), (612, 35320), (680, 31788), (720, 30022), (765, 28256), (816, 26490), (883, 24480), (1020, 21192), (1224, 17660), (1360, 15894), (1440, 15011), (1530, 14128), (1632, 13245), (1766, 12240), (2040, 10596), (2448, 8830), (2649, 8160), (2720, 7947), (3060, 7064), (3532, 6120), (4080, 5298), (4415, 4896)]