251733950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^3$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 523912896

約数和(自身を除く): 272178946

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 169, 310, 325, 338, 403, 650, 775, 806, 845, 961, 1550, 1690, 1922, 2015, 4030, 4225, 4805, 5239, 8450, 9610, 10075, 10478, 12493, 20150, 24025, 24986, 26195, 29791, 48050, 52390, 59582, 62465, 124930, 130975, 148955, 162409, 261950, 297910, 312325, 324818, 387283, 624650, 744775, 774566, 812045, 1489550, 1624090, 1936415, 3872830, 4060225, 5034679, 8120450, 9682075, 10069358, 19364150, 25173395, 50346790, 125866975, 251733950]

約数ペア:

[(1, 251733950), (2, 125866975), (5, 50346790), (10, 25173395), (13, 19364150), (25, 10069358), (26, 9682075), (31, 8120450), (50, 5034679), (62, 4060225), (65, 3872830), (130, 1936415), (155, 1624090), (169, 1489550), (310, 812045), (325, 774566), (338, 744775), (403, 624650), (650, 387283), (775, 324818), (806, 312325), (845, 297910), (961, 261950), (1550, 162409), (1690, 148955), (1922, 130975), (2015, 124930), (4030, 62465), (4225, 59582), (4805, 52390), (5239, 48050), (8450, 29791), (9610, 26195), (10075, 24986), (10478, 24025), (12493, 20150)]