21681120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2657}}^1$

素因数の和:2692

約数の個数: 96

約数和(自身を含む): 72340128

約数和(自身を除く): 50659008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 160, 170, 204, 240, 255, 272, 340, 408, 480, 510, 544, 680, 816, 1020, 1360, 1632, 2040, 2657, 2720, 4080, 5314, 7971, 8160, 10628, 13285, 15942, 21256, 26570, 31884, 39855, 42512, 45169, 53140, 63768, 79710, 85024, 90338, 106280, 127536, 135507, 159420, 180676, 212560, 225845, 255072, 271014, 318840, 361352, 425120, 451690, 542028, 637680, 677535, 722704, 903380, 1084056, 1275360, 1355070, 1445408, 1806760, 2168112, 2710140, 3613520, 4336224, 5420280, 7227040, 10840560, 21681120]

約数ペア:

[(1, 21681120), (2, 10840560), (3, 7227040), (4, 5420280), (5, 4336224), (6, 3613520), (8, 2710140), (10, 2168112), (12, 1806760), (15, 1445408), (16, 1355070), (17, 1275360), (20, 1084056), (24, 903380), (30, 722704), (32, 677535), (34, 637680), (40, 542028), (48, 451690), (51, 425120), (60, 361352), (68, 318840), (80, 271014), (85, 255072), (96, 225845), (102, 212560), (120, 180676), (136, 159420), (160, 135507), (170, 127536), (204, 106280), (240, 90338), (255, 85024), (272, 79710), (340, 63768), (408, 53140), (480, 45169), (510, 42512), (544, 39855), (680, 31884), (816, 26570), (1020, 21256), (1360, 15942), (1632, 13285), (2040, 10628), (2657, 8160), (2720, 7971), (4080, 5314)]