257781700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{443}}^1$

素因数の和:514

約数の個数: 108

約数和(自身を含む): 639365328

約数和(自身を除く): 381583628

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 110, 115, 220, 230, 253, 275, 443, 460, 506, 529, 550, 575, 886, 1012, 1058, 1100, 1150, 1265, 1772, 2116, 2215, 2300, 2530, 2645, 4430, 4873, 5060, 5290, 5819, 6325, 8860, 9746, 10189, 10580, 11075, 11638, 12650, 13225, 19492, 20378, 22150, 23276, 24365, 25300, 26450, 29095, 40756, 44300, 48730, 50945, 52900, 58190, 97460, 101890, 112079, 116380, 121825, 145475, 203780, 224158, 234347, 243650, 254725, 290950, 448316, 468694, 487300, 509450, 560395, 581900, 937388, 1018900, 1120790, 1171735, 2241580, 2343470, 2577817, 2801975, 4686940, 5155634, 5603950, 5858675, 10311268, 11207900, 11717350, 12889085, 23434700, 25778170, 51556340, 64445425, 128890850, 257781700]

約数ペア:

[(1, 257781700), (2, 128890850), (4, 64445425), (5, 51556340), (10, 25778170), (11, 23434700), (20, 12889085), (22, 11717350), (23, 11207900), (25, 10311268), (44, 5858675), (46, 5603950), (50, 5155634), (55, 4686940), (92, 2801975), (100, 2577817), (110, 2343470), (115, 2241580), (220, 1171735), (230, 1120790), (253, 1018900), (275, 937388), (443, 581900), (460, 560395), (506, 509450), (529, 487300), (550, 468694), (575, 448316), (886, 290950), (1012, 254725), (1058, 243650), (1100, 234347), (1150, 224158), (1265, 203780), (1772, 145475), (2116, 121825), (2215, 116380), (2300, 112079), (2530, 101890), (2645, 97460), (4430, 58190), (4873, 52900), (5060, 50945), (5290, 48730), (5819, 44300), (6325, 40756), (8860, 29095), (9746, 26450), (10189, 25300), (10580, 24365), (11075, 23276), (11638, 22150), (12650, 20378), (13225, 19492)]