21808560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1126

約数の個数: 80

約数和(自身を含む): 68433120

約数和(自身を除く): 46624560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 1021, 1068, 1335, 1424, 1780, 2042, 2136, 2670, 3063, 3560, 4084, 4272, 5105, 5340, 6126, 7120, 8168, 10210, 10680, 12252, 15315, 16336, 20420, 21360, 24504, 30630, 40840, 49008, 61260, 81680, 90869, 122520, 181738, 245040, 272607, 363476, 454345, 545214, 726952, 908690, 1090428, 1363035, 1453904, 1817380, 2180856, 2726070, 3634760, 4361712, 5452140, 7269520, 10904280, 21808560]

約数ペア:

[(1, 21808560), (2, 10904280), (3, 7269520), (4, 5452140), (5, 4361712), (6, 3634760), (8, 2726070), (10, 2180856), (12, 1817380), (15, 1453904), (16, 1363035), (20, 1090428), (24, 908690), (30, 726952), (40, 545214), (48, 454345), (60, 363476), (80, 272607), (89, 245040), (120, 181738), (178, 122520), (240, 90869), (267, 81680), (356, 61260), (445, 49008), (534, 40840), (712, 30630), (890, 24504), (1021, 21360), (1068, 20420), (1335, 16336), (1424, 15315), (1780, 12252), (2042, 10680), (2136, 10210), (2670, 8168), (3063, 7120), (3560, 6126), (4084, 5340), (4272, 5105)]