218256740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2083}}^1$

素因数の和:2149

約数の個数: 72

約数和(自身を含む): 512563968

約数和(自身を除く): 294307228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 620, 676, 806, 845, 1612, 1690, 2015, 2083, 3380, 4030, 4166, 5239, 8060, 8332, 10415, 10478, 20830, 20956, 26195, 27079, 41660, 52390, 54158, 64573, 104780, 108316, 129146, 135395, 258292, 270790, 322865, 352027, 541580, 645730, 704054, 839449, 1291460, 1408108, 1678898, 1760135, 3357796, 3520270, 4197245, 7040540, 8394490, 10912837, 16788980, 21825674, 43651348, 54564185, 109128370, 218256740]

約数ペア:

[(1, 218256740), (2, 109128370), (4, 54564185), (5, 43651348), (10, 21825674), (13, 16788980), (20, 10912837), (26, 8394490), (31, 7040540), (52, 4197245), (62, 3520270), (65, 3357796), (124, 1760135), (130, 1678898), (155, 1408108), (169, 1291460), (260, 839449), (310, 704054), (338, 645730), (403, 541580), (620, 352027), (676, 322865), (806, 270790), (845, 258292), (1612, 135395), (1690, 129146), (2015, 108316), (2083, 104780), (3380, 64573), (4030, 54158), (4166, 52390), (5239, 41660), (8060, 27079), (8332, 26195), (10415, 20956), (10478, 20830)]