21854280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{26017}}^1$

素因数の和:26038

約数の個数: 64

約数和(自身を含む): 74931840

約数和(自身を除く): 53077560

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, 26017, 52034, 78051, 104068, 130085, 156102, 182119, 208136, 260170, 312204, 364238, 390255, 520340, 546357, 624408, 728476, 780510, 910595, 1040680, 1092714, 1456952, 1561020, 1821190, 2185428, 2731785, 3122040, 3642380, 4370856, 5463570, 7284760, 10927140, 21854280]

約数ペア:

[(1, 21854280), (2, 10927140), (3, 7284760), (4, 5463570), (5, 4370856), (6, 3642380), (7, 3122040), (8, 2731785), (10, 2185428), (12, 1821190), (14, 1561020), (15, 1456952), (20, 1092714), (21, 1040680), (24, 910595), (28, 780510), (30, 728476), (35, 624408), (40, 546357), (42, 520340), (56, 390255), (60, 364238), (70, 312204), (84, 260170), (105, 208136), (120, 182119), (140, 156102), (168, 130085), (210, 104068), (280, 78051), (420, 52034), (840, 26017)]