21089520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1723}}^1$

素因数の和:1759

約数の個数: 120

約数和(自身を含む): 75035376

約数和(自身を除く): 53945856

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1723, 2040, 2448, 3060, 3446, 4080, 5169, 6120, 6892, 8615, 10338, 12240, 13784, 15507, 17230, 20676, 25845, 27568, 29291, 31014, 34460, 41352, 51690, 58582, 62028, 68920, 77535, 82704, 87873, 103380, 117164, 124056, 137840, 146455, 155070, 175746, 206760, 234328, 248112, 263619, 292910, 310140, 351492, 413520, 439365, 468656, 527238, 585820, 620280, 702984, 878730, 1054476, 1171640, 1240560, 1318095, 1405968, 1757460, 2108952, 2343280, 2636190, 3514920, 4217904, 5272380, 7029840, 10544760, 21089520]

約数ペア:

[(1, 21089520), (2, 10544760), (3, 7029840), (4, 5272380), (5, 4217904), (6, 3514920), (8, 2636190), (9, 2343280), (10, 2108952), (12, 1757460), (15, 1405968), (16, 1318095), (17, 1240560), (18, 1171640), (20, 1054476), (24, 878730), (30, 702984), (34, 620280), (36, 585820), (40, 527238), (45, 468656), (48, 439365), (51, 413520), (60, 351492), (68, 310140), (72, 292910), (80, 263619), (85, 248112), (90, 234328), (102, 206760), (120, 175746), (136, 155070), (144, 146455), (153, 137840), (170, 124056), (180, 117164), (204, 103380), (240, 87873), (255, 82704), (272, 77535), (306, 68920), (340, 62028), (360, 58582), (408, 51690), (510, 41352), (612, 34460), (680, 31014), (720, 29291), (765, 27568), (816, 25845), (1020, 20676), (1224, 17230), (1360, 15507), (1530, 13784), (1723, 12240), (2040, 10338), (2448, 8615), (3060, 6892), (3446, 6120), (4080, 5169)]