198808220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:615

約数の個数: 72

約数和(自身を含む): 456548400

約数和(自身を除く): 257740180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 169, 260, 262, 338, 449, 524, 655, 676, 845, 898, 1310, 1690, 1703, 1796, 2245, 2620, 3380, 3406, 4490, 5837, 6812, 8515, 8980, 11674, 17030, 22139, 23348, 29185, 34060, 44278, 58370, 58819, 75881, 88556, 110695, 116740, 117638, 151762, 221390, 235276, 294095, 303524, 379405, 442780, 588190, 758810, 764647, 1176380, 1517620, 1529294, 3058588, 3823235, 7646470, 9940411, 15292940, 19880822, 39761644, 49702055, 99404110, 198808220]

約数ペア:

[(1, 198808220), (2, 99404110), (4, 49702055), (5, 39761644), (10, 19880822), (13, 15292940), (20, 9940411), (26, 7646470), (52, 3823235), (65, 3058588), (130, 1529294), (131, 1517620), (169, 1176380), (260, 764647), (262, 758810), (338, 588190), (449, 442780), (524, 379405), (655, 303524), (676, 294095), (845, 235276), (898, 221390), (1310, 151762), (1690, 117638), (1703, 116740), (1796, 110695), (2245, 88556), (2620, 75881), (3380, 58819), (3406, 58370), (4490, 44278), (5837, 34060), (6812, 29185), (8515, 23348), (8980, 22139), (11674, 17030)]