21702170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 47056896

約数和(自身を除く): 25354726

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 73, 137, 146, 155, 217, 274, 310, 365, 434, 511, 685, 730, 959, 1022, 1085, 1370, 1918, 2170, 2263, 2555, 4247, 4526, 4795, 5110, 8494, 9590, 10001, 11315, 15841, 20002, 21235, 22630, 29729, 31682, 42470, 50005, 59458, 70007, 79205, 100010, 140014, 148645, 158410, 297290, 310031, 350035, 620062, 700070, 1550155, 2170217, 3100310, 4340434, 10851085, 21702170]

約数ペア:

[(1, 21702170), (2, 10851085), (5, 4340434), (7, 3100310), (10, 2170217), (14, 1550155), (31, 700070), (35, 620062), (62, 350035), (70, 310031), (73, 297290), (137, 158410), (146, 148645), (155, 140014), (217, 100010), (274, 79205), (310, 70007), (365, 59458), (434, 50005), (511, 42470), (685, 31682), (730, 29729), (959, 22630), (1022, 21235), (1085, 20002), (1370, 15841), (1918, 11315), (2170, 10001), (2263, 9590), (2555, 8494), (4247, 5110), (4526, 4795)]