21902900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 50621760

約数和(自身を除く): 28718860

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 89, 92, 100, 107, 115, 178, 214, 230, 356, 428, 445, 460, 535, 575, 890, 1070, 1150, 1780, 2047, 2140, 2225, 2300, 2461, 2675, 4094, 4450, 4922, 5350, 8188, 8900, 9523, 9844, 10235, 10700, 12305, 19046, 20470, 24610, 38092, 40940, 47615, 49220, 51175, 61525, 95230, 102350, 123050, 190460, 204700, 219029, 238075, 246100, 438058, 476150, 876116, 952300, 1095145, 2190290, 4380580, 5475725, 10951450, 21902900]

約数ペア:

[(1, 21902900), (2, 10951450), (4, 5475725), (5, 4380580), (10, 2190290), (20, 1095145), (23, 952300), (25, 876116), (46, 476150), (50, 438058), (89, 246100), (92, 238075), (100, 219029), (107, 204700), (115, 190460), (178, 123050), (214, 102350), (230, 95230), (356, 61525), (428, 51175), (445, 49220), (460, 47615), (535, 40940), (575, 38092), (890, 24610), (1070, 20470), (1150, 19046), (1780, 12305), (2047, 10700), (2140, 10235), (2225, 9844), (2300, 9523), (2461, 8900), (2675, 8188), (4094, 5350), (4450, 4922)]