21313920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{653}}^1$

素因数の和:692

約数の個数: 128

約数和(自身を含む): 72044640

約数和(自身を除く): 50730720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 128, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 384, 408, 480, 510, 544, 640, 653, 680, 816, 960, 1020, 1088, 1306, 1360, 1632, 1920, 1959, 2040, 2176, 2612, 2720, 3264, 3265, 3918, 4080, 5224, 5440, 6528, 6530, 7836, 8160, 9795, 10448, 10880, 11101, 13060, 15672, 16320, 19590, 20896, 22202, 26120, 31344, 32640, 33303, 39180, 41792, 44404, 52240, 55505, 62688, 66606, 78360, 83584, 88808, 104480, 111010, 125376, 133212, 156720, 166515, 177616, 208960, 222020, 250752, 266424, 313440, 333030, 355232, 417920, 444040, 532848, 626880, 666060, 710464, 888080, 1065696, 1253760, 1332120, 1420928, 1776160, 2131392, 2664240, 3552320, 4262784, 5328480, 7104640, 10656960, 21313920]

約数ペア:

[(1, 21313920), (2, 10656960), (3, 7104640), (4, 5328480), (5, 4262784), (6, 3552320), (8, 2664240), (10, 2131392), (12, 1776160), (15, 1420928), (16, 1332120), (17, 1253760), (20, 1065696), (24, 888080), (30, 710464), (32, 666060), (34, 626880), (40, 532848), (48, 444040), (51, 417920), (60, 355232), (64, 333030), (68, 313440), (80, 266424), (85, 250752), (96, 222020), (102, 208960), (120, 177616), (128, 166515), (136, 156720), (160, 133212), (170, 125376), (192, 111010), (204, 104480), (240, 88808), (255, 83584), (272, 78360), (320, 66606), (340, 62688), (384, 55505), (408, 52240), (480, 44404), (510, 41792), (544, 39180), (640, 33303), (653, 32640), (680, 31344), (816, 26120), (960, 22202), (1020, 20896), (1088, 19590), (1306, 16320), (1360, 15672), (1632, 13060), (1920, 11101), (1959, 10880), (2040, 10448), (2176, 9795), (2612, 8160), (2720, 7836), (3264, 6530), (3265, 6528), (3918, 5440), (4080, 5224)]