21971340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3299}}^1$

素因数の和:3351

約数の個数: 72

約数和(自身を含む): 68468400

約数和(自身を除く): 46497060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3299, 3330, 6598, 6660, 9897, 13196, 16495, 19794, 29691, 32990, 39588, 49485, 59382, 65980, 98970, 118764, 122063, 148455, 197940, 244126, 296910, 366189, 488252, 593820, 610315, 732378, 1098567, 1220630, 1464756, 1830945, 2197134, 2441260, 3661890, 4394268, 5492835, 7323780, 10985670, 21971340]

約数ペア:

[(1, 21971340), (2, 10985670), (3, 7323780), (4, 5492835), (5, 4394268), (6, 3661890), (9, 2441260), (10, 2197134), (12, 1830945), (15, 1464756), (18, 1220630), (20, 1098567), (30, 732378), (36, 610315), (37, 593820), (45, 488252), (60, 366189), (74, 296910), (90, 244126), (111, 197940), (148, 148455), (180, 122063), (185, 118764), (222, 98970), (333, 65980), (370, 59382), (444, 49485), (555, 39588), (666, 32990), (740, 29691), (1110, 19794), (1332, 16495), (1665, 13196), (2220, 9897), (3299, 6660), (3330, 6598)]