638400990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{2663}}^1$

素因数の和:2865

約数の個数: 64

約数和(自身を含む): 1569756672

約数和(自身を除く): 931355682

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 122, 131, 183, 262, 305, 366, 393, 610, 655, 786, 915, 1310, 1830, 1965, 2663, 3930, 5326, 7989, 7991, 13315, 15978, 15982, 23973, 26630, 39945, 39955, 47946, 79890, 79910, 119865, 162443, 239730, 324886, 348853, 487329, 697706, 812215, 974658, 1046559, 1624430, 1744265, 2093118, 2436645, 3488530, 4873290, 5232795, 10465590, 21280033, 42560066, 63840099, 106400165, 127680198, 212800330, 319200495, 638400990]

約数ペア:

[(1, 638400990), (2, 319200495), (3, 212800330), (5, 127680198), (6, 106400165), (10, 63840099), (15, 42560066), (30, 21280033), (61, 10465590), (122, 5232795), (131, 4873290), (183, 3488530), (262, 2436645), (305, 2093118), (366, 1744265), (393, 1624430), (610, 1046559), (655, 974658), (786, 812215), (915, 697706), (1310, 487329), (1830, 348853), (1965, 324886), (2663, 239730), (3930, 162443), (5326, 119865), (7989, 79910), (7991, 79890), (13315, 47946), (15978, 39955), (15982, 39945), (23973, 26630)]