20957378240

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1\times {\mathrm{2351}}^1$

素因数の和:2770

約数の個数: 112

約数和(自身を含む): 50648250240

約数和(自身を除く): 29690872000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 313, 320, 356, 445, 626, 712, 890, 1252, 1424, 1565, 1780, 2351, 2504, 2848, 3130, 3560, 4702, 5008, 5696, 6260, 7120, 9404, 10016, 11755, 12520, 14240, 18808, 20032, 23510, 25040, 27857, 28480, 37616, 47020, 50080, 55714, 75232, 94040, 100160, 111428, 139285, 150464, 188080, 209239, 222856, 278570, 376160, 418478, 445712, 557140, 735863, 752320, 836956, 891424, 1046195, 1114280, 1471726, 1673912, 1782848, 2092390, 2228560, 2943452, 3347824, 3679315, 4184780, 4457120, 5886904, 6695648, 7358630, 8369560, 8914240, 11773808, 13391296, 14717260, 16739120, 23547616, 29434520, 33478240, 47095232, 58869040, 65491807, 66956480, 117738080, 130983614, 235476160, 261967228, 327459035, 523934456, 654918070, 1047868912, 1309836140, 2095737824, 2619672280, 4191475648, 5239344560, 10478689120, 20957378240]

約数ペア:

[(1, 20957378240), (2, 10478689120), (4, 5239344560), (5, 4191475648), (8, 2619672280), (10, 2095737824), (16, 1309836140), (20, 1047868912), (32, 654918070), (40, 523934456), (64, 327459035), (80, 261967228), (89, 235476160), (160, 130983614), (178, 117738080), (313, 66956480), (320, 65491807), (356, 58869040), (445, 47095232), (626, 33478240), (712, 29434520), (890, 23547616), (1252, 16739120), (1424, 14717260), (1565, 13391296), (1780, 11773808), (2351, 8914240), (2504, 8369560), (2848, 7358630), (3130, 6695648), (3560, 5886904), (4702, 4457120), (5008, 4184780), (5696, 3679315), (6260, 3347824), (7120, 2943452), (9404, 2228560), (10016, 2092390), (11755, 1782848), (12520, 1673912), (14240, 1471726), (18808, 1114280), (20032, 1046195), (23510, 891424), (25040, 836956), (27857, 752320), (28480, 735863), (37616, 557140), (47020, 445712), (50080, 418478), (55714, 376160), (75232, 278570), (94040, 222856), (100160, 209239), (111428, 188080), (139285, 150464)]