28906900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2389}}^1$

素因数の和:2425

約数の個数: 54

約数和(自身を含む): 68977790

約数和(自身を除く): 40070890

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 220, 242, 275, 484, 550, 605, 1100, 1210, 2389, 2420, 3025, 4778, 6050, 9556, 11945, 12100, 23890, 26279, 47780, 52558, 59725, 105116, 119450, 131395, 238900, 262790, 289069, 525580, 578138, 656975, 1156276, 1313950, 1445345, 2627900, 2890690, 5781380, 7226725, 14453450, 28906900]

約数ペア:

[(1, 28906900), (2, 14453450), (4, 7226725), (5, 5781380), (10, 2890690), (11, 2627900), (20, 1445345), (22, 1313950), (25, 1156276), (44, 656975), (50, 578138), (55, 525580), (100, 289069), (110, 262790), (121, 238900), (220, 131395), (242, 119450), (275, 105116), (484, 59725), (550, 52558), (605, 47780), (1100, 26279), (1210, 23890), (2389, 12100), (2420, 11945), (3025, 9556), (4778, 6050)]