256596340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1831}}^1$

素因数の和:1878

約数の個数: 144

約数和(自身を含む): 736815744

約数和(自身を除く): 480219404

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 130, 140, 143, 154, 182, 196, 220, 245, 260, 286, 308, 364, 385, 455, 490, 539, 572, 637, 715, 770, 910, 980, 1001, 1078, 1274, 1430, 1540, 1820, 1831, 2002, 2156, 2548, 2695, 2860, 3185, 3662, 4004, 5005, 5390, 6370, 7007, 7324, 9155, 10010, 10780, 12740, 12817, 14014, 18310, 20020, 20141, 23803, 25634, 28028, 35035, 36620, 40282, 47606, 51268, 64085, 70070, 80564, 89719, 95212, 100705, 119015, 128170, 140140, 140987, 166621, 179438, 201410, 238030, 256340, 261833, 281974, 333242, 358876, 402820, 448595, 476060, 523666, 563948, 666484, 704935, 833105, 897190, 986909, 1047332, 1166347, 1309165, 1409870, 1666210, 1794380, 1832831, 1973818, 2332694, 2618330, 2819740, 3332420, 3665662, 3947636, 4665388, 4934545, 5236660, 5831735, 7331324, 9164155, 9869090, 11663470, 12829817, 18328310, 19738180, 23326940, 25659634, 36656620, 51319268, 64149085, 128298170, 256596340]

約数ペア:

[(1, 256596340), (2, 128298170), (4, 64149085), (5, 51319268), (7, 36656620), (10, 25659634), (11, 23326940), (13, 19738180), (14, 18328310), (20, 12829817), (22, 11663470), (26, 9869090), (28, 9164155), (35, 7331324), (44, 5831735), (49, 5236660), (52, 4934545), (55, 4665388), (65, 3947636), (70, 3665662), (77, 3332420), (91, 2819740), (98, 2618330), (110, 2332694), (130, 1973818), (140, 1832831), (143, 1794380), (154, 1666210), (182, 1409870), (196, 1309165), (220, 1166347), (245, 1047332), (260, 986909), (286, 897190), (308, 833105), (364, 704935), (385, 666484), (455, 563948), (490, 523666), (539, 476060), (572, 448595), (637, 402820), (715, 358876), (770, 333242), (910, 281974), (980, 261833), (1001, 256340), (1078, 238030), (1274, 201410), (1430, 179438), (1540, 166621), (1820, 140987), (1831, 140140), (2002, 128170), (2156, 119015), (2548, 100705), (2695, 95212), (2860, 89719), (3185, 80564), (3662, 70070), (4004, 64085), (5005, 51268), (5390, 47606), (6370, 40282), (7007, 36620), (7324, 35035), (9155, 28028), (10010, 25634), (10780, 23803), (12740, 20141), (12817, 20020), (14014, 18310)]