21041520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1201}}^1$

素因数の和:1290

約数の個数: 80

約数和(自身を含む): 66177312

約数和(自身を除く): 45135792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 73, 80, 120, 146, 219, 240, 292, 365, 438, 584, 730, 876, 1095, 1168, 1201, 1460, 1752, 2190, 2402, 2920, 3504, 3603, 4380, 4804, 5840, 6005, 7206, 8760, 9608, 12010, 14412, 17520, 18015, 19216, 24020, 28824, 36030, 48040, 57648, 72060, 87673, 96080, 144120, 175346, 263019, 288240, 350692, 438365, 526038, 701384, 876730, 1052076, 1315095, 1402768, 1753460, 2104152, 2630190, 3506920, 4208304, 5260380, 7013840, 10520760, 21041520]

約数ペア:

[(1, 21041520), (2, 10520760), (3, 7013840), (4, 5260380), (5, 4208304), (6, 3506920), (8, 2630190), (10, 2104152), (12, 1753460), (15, 1402768), (16, 1315095), (20, 1052076), (24, 876730), (30, 701384), (40, 526038), (48, 438365), (60, 350692), (73, 288240), (80, 263019), (120, 175346), (146, 144120), (219, 96080), (240, 87673), (292, 72060), (365, 57648), (438, 48040), (584, 36030), (730, 28824), (876, 24020), (1095, 19216), (1168, 18015), (1201, 17520), (1460, 14412), (1752, 12010), (2190, 9608), (2402, 8760), (2920, 7206), (3504, 6005), (3603, 5840), (4380, 4804)]