21565320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25673}}^1$

素因数の和:25694

約数の個数: 64

約数和(自身を含む): 73941120

約数和(自身を除く): 52375800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25673, 51346, 77019, 102692, 128365, 154038, 179711, 205384, 256730, 308076, 359422, 385095, 513460, 539133, 616152, 718844, 770190, 898555, 1026920, 1078266, 1437688, 1540380, 1797110, 2156532, 2695665, 3080760, 3594220, 4313064, 5391330, 7188440, 10782660, 21565320]

約数ペア:

[(1, 21565320), (2, 10782660), (3, 7188440), (4, 5391330), (5, 4313064), (6, 3594220), (7, 3080760), (8, 2695665), (10, 2156532), (12, 1797110), (14, 1540380), (15, 1437688), (20, 1078266), (21, 1026920), (24, 898555), (28, 770190), (30, 718844), (35, 616152), (40, 539133), (42, 513460), (56, 385095), (60, 359422), (70, 308076), (84, 256730), (105, 205384), (120, 179711), (140, 154038), (168, 128365), (210, 102692), (280, 77019), (420, 51346), (840, 25673)]