210657940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:389

約数の個数: 72

約数和(自身を含む): 472379040

約数和(自身を除く): 261721100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 163, 179, 190, 326, 358, 361, 380, 652, 716, 722, 815, 895, 1444, 1630, 1790, 1805, 3097, 3260, 3401, 3580, 3610, 6194, 6802, 7220, 12388, 13604, 15485, 17005, 29177, 30970, 34010, 58354, 58843, 61940, 64619, 68020, 116708, 117686, 129238, 145885, 235372, 258476, 291770, 294215, 323095, 554363, 583540, 588430, 646190, 1108726, 1176860, 1292380, 2217452, 2771815, 5543630, 10532897, 11087260, 21065794, 42131588, 52664485, 105328970, 210657940]

約数ペア:

[(1, 210657940), (2, 105328970), (4, 52664485), (5, 42131588), (10, 21065794), (19, 11087260), (20, 10532897), (38, 5543630), (76, 2771815), (95, 2217452), (163, 1292380), (179, 1176860), (190, 1108726), (326, 646190), (358, 588430), (361, 583540), (380, 554363), (652, 323095), (716, 294215), (722, 291770), (815, 258476), (895, 235372), (1444, 145885), (1630, 129238), (1790, 117686), (1805, 116708), (3097, 68020), (3260, 64619), (3401, 61940), (3580, 58843), (3610, 58354), (6194, 34010), (6802, 30970), (7220, 29177), (12388, 17005), (13604, 15485)]