210917860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 473147136

約数和(自身を除く): 262229276

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 223, 262, 361, 380, 446, 524, 655, 722, 892, 1115, 1310, 1444, 1805, 2230, 2489, 2620, 3610, 4237, 4460, 4978, 7220, 8474, 9956, 12445, 16948, 21185, 24890, 29213, 42370, 47291, 49780, 58426, 80503, 84740, 94582, 116852, 146065, 161006, 189164, 236455, 292130, 322012, 402515, 472910, 555047, 584260, 805030, 945820, 1110094, 1610060, 2220188, 2775235, 5550470, 10545893, 11100940, 21091786, 42183572, 52729465, 105458930, 210917860]

約数ペア:

[(1, 210917860), (2, 105458930), (4, 52729465), (5, 42183572), (10, 21091786), (19, 11100940), (20, 10545893), (38, 5550470), (76, 2775235), (95, 2220188), (131, 1610060), (190, 1110094), (223, 945820), (262, 805030), (361, 584260), (380, 555047), (446, 472910), (524, 402515), (655, 322012), (722, 292130), (892, 236455), (1115, 189164), (1310, 161006), (1444, 146065), (1805, 116852), (2230, 94582), (2489, 84740), (2620, 80503), (3610, 58426), (4237, 49780), (4460, 47291), (4978, 42370), (7220, 29213), (8474, 24890), (9956, 21185), (12445, 16948)]