71281920

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1020

約数の個数: 144

約数和(自身を含む): 239883840

約数和(自身を除く): 168601920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 256, 285, 304, 320, 380, 384, 456, 480, 570, 608, 640, 760, 768, 912, 960, 977, 1140, 1216, 1280, 1520, 1824, 1920, 1954, 2280, 2432, 2931, 3040, 3648, 3840, 3908, 4560, 4864, 4885, 5862, 6080, 7296, 7816, 9120, 9770, 11724, 12160, 14592, 14655, 15632, 18240, 18563, 19540, 23448, 24320, 29310, 31264, 36480, 37126, 39080, 46896, 55689, 58620, 62528, 72960, 74252, 78160, 92815, 93792, 111378, 117240, 125056, 148504, 156320, 185630, 187584, 222756, 234480, 250112, 278445, 297008, 312640, 371260, 375168, 445512, 468960, 556890, 594016, 625280, 742520, 750336, 891024, 937920, 1113780, 1188032, 1250560, 1485040, 1782048, 1875840, 2227560, 2376064, 2970080, 3564096, 3751680, 4455120, 4752128, 5940160, 7128192, 8910240, 11880320, 14256384, 17820480, 23760640, 35640960, 71281920]

約数ペア:

[(1, 71281920), (2, 35640960), (3, 23760640), (4, 17820480), (5, 14256384), (6, 11880320), (8, 8910240), (10, 7128192), (12, 5940160), (15, 4752128), (16, 4455120), (19, 3751680), (20, 3564096), (24, 2970080), (30, 2376064), (32, 2227560), (38, 1875840), (40, 1782048), (48, 1485040), (57, 1250560), (60, 1188032), (64, 1113780), (76, 937920), (80, 891024), (95, 750336), (96, 742520), (114, 625280), (120, 594016), (128, 556890), (152, 468960), (160, 445512), (190, 375168), (192, 371260), (228, 312640), (240, 297008), (256, 278445), (285, 250112), (304, 234480), (320, 222756), (380, 187584), (384, 185630), (456, 156320), (480, 148504), (570, 125056), (608, 117240), (640, 111378), (760, 93792), (768, 92815), (912, 78160), (960, 74252), (977, 72960), (1140, 62528), (1216, 58620), (1280, 55689), (1520, 46896), (1824, 39080), (1920, 37126), (1954, 36480), (2280, 31264), (2432, 29310), (2931, 24320), (3040, 23448), (3648, 19540), (3840, 18563), (3908, 18240), (4560, 15632), (4864, 14655), (4885, 14592), (5862, 12160), (6080, 11724), (7296, 9770), (7816, 9120)]