21611540

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{277}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 47077632

約数和(自身を除く): 25466092

約数列:

[1, 2, 4, 5, 10, 20, 47, 83, 94, 166, 188, 235, 277, 332, 415, 470, 554, 830, 940, 1108, 1385, 1660, 2770, 3901, 5540, 7802, 13019, 15604, 19505, 22991, 26038, 39010, 45982, 52076, 65095, 78020, 91964, 114955, 130190, 229910, 260380, 459820, 1080577, 2161154, 4322308, 5402885, 10805770, 21611540]

約数ペア:

[(1, 21611540), (2, 10805770), (4, 5402885), (5, 4322308), (10, 2161154), (20, 1080577), (47, 459820), (83, 260380), (94, 229910), (166, 130190), (188, 114955), (235, 91964), (277, 78020), (332, 65095), (415, 52076), (470, 45982), (554, 39010), (830, 26038), (940, 22991), (1108, 19505), (1385, 15604), (1660, 13019), (2770, 7802), (3901, 5540)]