21450550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:973

約数の個数: 48

約数和(自身を含む): 44586432

約数和(自身を除く): 23135882

約数列:

[1, 2, 5, 10, 11, 22, 25, 43, 50, 55, 86, 110, 215, 275, 430, 473, 550, 907, 946, 1075, 1814, 2150, 2365, 4535, 4730, 9070, 9977, 11825, 19954, 22675, 23650, 39001, 45350, 49885, 78002, 99770, 195005, 249425, 390010, 429011, 498850, 858022, 975025, 1950050, 2145055, 4290110, 10725275, 21450550]

約数ペア:

[(1, 21450550), (2, 10725275), (5, 4290110), (10, 2145055), (11, 1950050), (22, 975025), (25, 858022), (43, 498850), (50, 429011), (55, 390010), (86, 249425), (110, 195005), (215, 99770), (275, 78002), (430, 49885), (473, 45350), (550, 39001), (907, 23650), (946, 22675), (1075, 19954), (1814, 11825), (2150, 9977), (2365, 9070), (4535, 4730)]